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News articles on climate change
Mongabay.com news articles on climate change in blog format. Updated regularly.
(02/18/2007) Three hundred million years ago, Earth's climate shifted dramatically from icehouse to hothouse, with major environmental consequences. That shift was the result of both rising atmospheric carbon dioxide concentrations and the melting of vast ice sheets, new research by University of Michigan paleoclimatologist Christopher Poulsen shows.
Global warming could cause Canadian forests to absorb more carbon
(02/18/2007) Researchers say they have found links between seasonal temperature changes and the uptake and loss of carbon dioxide.
Largest tropical glacier retreating at 200 feet per year in Peru
(02/18/2007) Peru's largest glacier is melting rapidly and could complete disappear by 2012 says a glaciologist from Ohio State University. Speaking at the annual meeting of the American Association for the Advancement of Science in San Francisco last week, Dr. Lonnie Thompson said that Peru's Qori Kalis glacier is melting at a rate of some 60 meters (200 feet) per year. Qori Kalis glacier is part of the Quelccaya Ice Cap, the largest body of ice in the tropics.
Global research network needed to understand changes in the Arctic
(02/17/2007) A worldwide research network is needed to better understand how climate change is affecting the Arctic, says an Ohio State University geologist.
Water forecasts in Western U.S. have not improved in 40 years
(02/16/2007) Water supply predictions for the western United States are no better now than they were in the 1960s -- something that should be of particular concern as the effects of climate change become increasingly apparent -- say researchers from the University of Washington (UW).
Americans believe in global warming but don't want to make changes
(02/16/2007) Most Americans believe global warming is real but view it as a distant threat according to comments by Anthony Leiserowitz, a professor of environmental studies at the University of Oregon, at the annual meeting of the American Association for the Advancement of Science in San Francisco.
America needs to plan for global warming-induced drought
(02/16/2007) Models suggest that climate change is likely to produce increased incidence of summer droughts in the western United States. Researchers from Oregon State University say that now is the time to prepare for potential catastrophe.
Antarctic temperatures are not rising
(02/15/2007) Temperatures in Antarctica are not rising as predicted by many climate models, according to research presented at the annual meeting of the American Association for the Advancement of Science in San Francisco. David Bromwich, researcher with the Byrd Polar Research Center at Ohio State University, reports that his work has found no increase in precipitation over Antarctica in the last 50 years. Most climate models predict that precipitation and temperature will increase over Antarctica as the planet warms.
Antarctic Peninsula warming affects penguins, krill
(02/15/2007) While much of Antarctica has cooled over the past decade, a warming trend in the Antarctic Peninsula may indicate what the future holds for the rest of the icy continent's wildlife. Researchers at Ohio State University say that higher temperatures have already forced penguin populations to migrate south and may have reduced the availability of krill that serve as the based of the Antarctic food chain.
Global warming may worsen droughts in U.S. Southwest, Middle East
(02/14/2007) A new NASA study says that global warming could increase droughts in southwest United States, Mexico, parts of North Africa, the Middle East, and Australia -- areas already stressed by periodic water shortages.
Global cooling may have spawned complex life on Earth
(02/13/2007) Icy conditions some 600-800 million years ago may have set the stage for the evolution of more complex lifeforms, according to research published in the February 14, 2007 edition of PLoS ONE. The theory may have implications for life on other planets.
2006 was fifth warmest year on record
(02/13/2007) Last week NASA scientists announced that 2006 was the fifth-warmest year in the past century, after 2005, 1998, 2002, and 2003 (in descending order by warmest year).
$25 million prize to fight global warming
(02/12/2007) Friday Sir Richard Branson and Al Gore announced the establishment of a $25 million prize for the development of a technology that fights global warming by removing carbon dioxide from the atmosphere. The prize follows in the footsteps of the X Prize, a contest that was won by the SpaceShipOne rocket plane as the first privately developed craft to reach the boundary of outer space.
Societies must adapt to global warming, mitigation alone is not the answer
(02/07/2007) Mankind must prepare for global warming by building resilient societies and fostering sustainable development, says a team scientists writing in the current issue of the journal Nature. The researchers say climate change is inevitable and policymakers should be plan adaptation strategies to minimize the negative impacts of future environmental stresses on society.
Carbon dioxide could be frozen and stored to fight global warming
(02/07/2007) Carbon dioxide could be frozen and stored huge underground reservoirs as a way to fight global warming according to scientists from the University of Leicester and the British Geological Society (BGS).
Extinction risk accelerated when interacting human threats interact
(02/07/2007) A new study warns that the simultaneous effect of habitat fragmentation, overexploitation, and climate warming could increase the risk of a species' extinction.
North America hit by sudden, severe climate cooling 65 M years ago
(02/07/2007) The largest climate change in central North America since the age of the dinosaurs 65 million years ago, a temperature drop of nearly 15 degrees Fahrenheit, is documented within the fossilized teeth of horses and other plant-eating mammals, a new study reveals.
Lemurs at risk due to invasion of feral beasts, global warming
(02/07/2007) The lemurs of Madagascar are among the world's most threatened primates. Extensive habitat destruction, hunting, and the introduction of alien species have doomed dozens of species to extinction since humans first arrived on the island within the past 2000 years. Most of the casualties were Madagascar's largest lemurs -- today the biggest lemur is but a fraction of the gorilla-sized giants that once ruled the island. Despite this relative impoverishment of megafauna, Madagascar still boasts nearly 90 kinds of lemurs, all of which are unique to the island (save one species that was probably introduced to some nearby islands). Lemurs display a range of unusual behvaiors from singing like a whale (the indri) to sashaying across the sand like a ballet dancer (the sifaka). Interest in lemurs has helped Madagascar become a global conservation priority, though they are still at risk. Continued deforestation, scattered hunting, and looming climate change all pose significant threats to some lemur populations. One largely unexamined threat comes from introduced species such as the Indian civet and mongoose, but especially dogs and cats that have become feral.
Just how bad is the biodiversity extinction crisis?
(02/06/2007) In recent years, scientists have warned of a looming biodiversity extinction crisis, one that will rival or exceed the five historic mass extinctions that occurred millions of years ago. Unlike these past extinctions, which were variously the result of catastrophic climate change, extraterrestrial collisions, atmospheric poisoning, and hyperactive volcanism, the current extinction event is one of our own making, fueled mainly by habitat destruction and, to a lesser extent, over-exploitation of certain species. While few scientists doubt species extinction is occurring, the degree to which it will occur in the future has long been subject of debate in conservation literature. Looking solely at species loss resulting from tropical deforestation, some researchers have forecast extinction rates as high as 75 percent. Now a new paper, published in Biotropica, argues that the most dire of these projections may be overstated. Using models that show lower rates of forest loss based on slowing population growth and other factors, Joseph Wright from the Smithsonian Tropical Research Institute in Panama and Helene Muller-Landau from the University of Minnesota say that species loss may be more moderate than the commonly cited figures. While some scientists have criticized their work as "overly optimistic," prominent biologists say that their research has ignited an important discussion and raises fundamental questions about future conservation priorities and research efforts. This could ultimately result in more effective strategies for conserving biological diversity, they say.
Brazil calls out rich countries on global warming
(02/06/2007) Reuters reports that Brazilian President Luiz Inacio Lula da Silva criticized wealthy countries for their contributions to global warming and told them to stay out of Brazil's business when it comes to the fate of the Amazon rainforest.
Global warming report released in Paris
(02/02/2007) The Intergovernmental Panel on Climate Change (IPCC) officially unveiled its long-waited report on global climate change. The report was produced by some 600 authors from 40 countries and representatives from 113 governments reviewed and signed off on the report the course of this week.
Global warming may be beneficial to some fishermen
(02/01/2007) Climate change may be a boon to fisheries off northwestern Africa according to research published in Friday's issue of the journal Science. Lead by Dr. Helen McGregor, a paleoclimatologist at the University of Bremen's Research Center Ocean Margins in Germany, a team of scientists using data from sediment cores linked coastal upwelling off the coast of Morocco to 20th century climate warming. The results are significant because coastal upwelling zones, where nutrient-rich waters rise to the ocean's surface, yield roughly 20 percent of the world's fish harvest but represent less than one percent of the world ocean surface area.
Sea levels rising at fastest rate on record
(02/01/2007) A group of prominent scientists criticized the Intergovernmental Panel on Climate Change (IPCC) climate report due to be released Friday. Writing in Friday's issue of the journal Science, the scientists say the IPCC report understates the risk of rising sea levels by accounting for melting ice in Antarctica and Greenland.
Caves may reveal if global warming is causing stronger hurricanes
(01/29/2007) Scientists have shown that cave formations could help settle the contentious debate on whether hurricanes are strengthening in intensity due to global warming. Measuring oxygen isotope variation in stalagmites in Actun Tunichil Muknal cave in central Belize, a team of researchers have identified evidence of rainfall from 11 tropical cyclones over a 23 year period (1978-2001). The research -- the study of ancient storms is called paleotempestology -- could help create a record of hurricanes that would help researchers understand hurricane frequency and intensity. "Tropical cyclones (including hurricanes, tropical storms, typhoons, and cyclones) produce rainwater that is different from other summertime precipitation," explained Amy Benoit Frappier, an assistant professor in the Department of Geology and Geophysics at Boston College and lead author of the study published in Geology. "Tropical cyclones produce isotopically light rainwater primarily because 1) their cloud tops are very high and cold, and 2) their humid air tends to prevent lighter water molecules from evaporating back out of the raindrop as they fall."
Temperature record for Midwest shows impact of global warming
(01/29/2007) Researchers have developed a new method to create a temperature record for the Great Plains region of the United States. The model, based on analysis of ancient soils, could help predict the impact of global warming on American agricultural production.
Is global warming causing stronger hurricanes? Caves may hold the answer
(01/26/2007) Scientists have shown that cave formations could help settle the contentious debate on whether hurricanes are strengthening in intensity due to global warming. Measuring oxygen isotope variation in stalagmites in Actun Tunichil Muknal cave in central Belize, a team of researchers lead by Amy Benoit Frappier of Boston College have identified evidence of rainfall from 11 tropical cyclones over a 23 year period. The research -- the study of ancient storms is called paleotempestology -- could help create a record of hurricanes that would help researchers understand hurricane frequency and intensity. Currently, reliable history for hurricanes only dates back a generation or so. Prior to that, the official hurricane records kept by the National Oceanic and Atmospheric Administration's Atlantic basin hurricane database (HURDAT) are controversial at best since storm data from more than 20 years ago is not nearly as accurate as current hurricane data due to improvements in tracking technology. The lack of a credible baseline makes it nearly impossible to accurately compare storm frequency and strength over the period.
Giant carnivorous marsupial beasts not killed by climate change in Australia
(01/25/2007) Humans, not climate change, caused the extinction of megafauna in Australia contends a team of Australian researchers writing in the January issue of the journal Science. Australia lost 90 percent of its largest animals, including a saber-toothed kangaroo, a marsupial lion and giant goannas, within 20,000 years of man's arrival some 50,000 years ago. Scientists have long debated whether the demise of Australian megafauna was due to human arrival, climate change, or a combination of the two factors. The new research found that the climate in southeastern Australia was little different 500,000 years ago, suggesting that climate change was not the ultimate cause of extinction.
Global warming cap to cost U.S. 0.26% of GDP says Energy Department
(01/23/2007) A proposed cap-and-trade system to curb U.S. greenhouse-gas emissions will cost the U.S. economy 0.26 percent of annual GDP according to a new study by the Department of Energy's Energy Information Agency (EIA). The EIA says that the plan would lead to higher energy prices inlcuding a 5 percent rise in the price of gasoline, an 8 percent climb in the price of heating-oil an 11 percent increase in the price of natural gas and electricity.
American industry jumps on global warming bandwagon
(01/23/2007) On the eve of President Bush's State of the Union address, American industry is fast-jumping on the global warming bandwagon, according to an article in today's issue of The Wall Street Journal. Yesterday the CEOs of 10 major corporations asked Congress to implement binding limits on greenhouse gases this year, arguing that voluntary efforts to fight climate change are inadequate.
Bush calls climate change a 'serious challenge'
(01/23/2007) In his State of the Union Address Tuesday night, President Bush called climate change a 'serious challenge' that needs to be met by reducing fossil fuel emissions. The president asked Americans to reduce their gasoline use by 20 percent over the next decade and called for increases in automobile fuel efficiency standards and use of alternative energy.
In Arctic Mud, Geologists Find Strong Evidence of Climate Change
(01/22/2007) How severe will global warming get? Jason P. Briner is looking for an answer buried deep in mud dozens of feet below the surface of lakes in the frigid Canadian Arctic. His group is gathering the first quantitative temperature data over the last millennium from areas in extreme northeastern sections of the Canadian Arctic, such as Baffin Island. Every spring, Briner, Ph.D., assistant professor of geology in the College of Arts and Sciences at the University at Buffalo, travels to the region to sample Arctic lake sediments and glaciers and analyzes them to reconstruct past climates.
Leaf study could produce better global warming models
(01/18/2007) A new study on rotting leaves could produce more accurate climate models say researchers writing in the January 19 issue of the journal Science.
Bush administration says polar bears under threat
(12/27/2006) Today the Bush Administration said polar bears are in need of protection. The reason? Global warming. The administration says that climate change is causing sea ice to melt, putting the polar bear in peril.
Warmer oceans reduce dispersal of shellfish larvae
(12/25/2006) In a study published in the Dec. 25 Early Edition of Proceedings of the National Academy of Sciences (PNAS), scientists show they can predict how the distance marine larvae travel varies with ocean temperature. The say that the findings have important implications for the conservation and management of fish, shellfish and other marine species in oceans increasingly effected by climate change.
Wildfires are linked to Atlantic Ocean temperatures
(12/25/2006) Scientists have linked the incidence of wildfires in the Western United States to Atlantic Ocean temperatures.
'Happy Feet' penguins declining fast in the Falklands
(12/22/2006) The rockhopper penguin, a species featured in the movie Happy Feet, has taken a suffered a 30 percent population decline over the past five years according to the latest survey figures from Falklands conservation, a conservation group with offices in Stanley, Falkland Islands and London, England.
Global warming improves sex life of seals
(12/15/2006) Climate change is enhancing the sex life of subordinate male grey seals on the remote Scottish Island of North Rona according to researchers at Durham University and the University of St Andrews.
2006 is third warmest year on record for the United States
(12/15/2006) 2006 will likely go down as the third warmest year on record for the United States according to scientists at NOAA's National Climatic Data Center (NCDC) in Asheville, North Carolina. Globally, 2006 will have the sixth highest annual global temperature since record keeping began in 1880 NCDC says that the 2006 annual average temperature for the contiguous United States (based on preliminary data) will likely be 2F (1.1C) above the 20th century mean, making 2006 the third warmest year on record, just cooler than 1998 and 1934. 2006 has been a record year for wildfires which researchers say will continue to increase in frequency and intensity as climate continues to warm.
2006 is sixth warmest year, but hurricanes below average
(12/15/2006) 2006 will be the sixth-warmest year on record according to the World Meteorological Organization (WHO). The United Nations weather agency said the ten hottest years have all occurred in the past 12 years. 2005 was the warmest year since record keeping began 150 years ago, according to the agency.
Sea levels may rise higher than predicted due to global warming
(12/15/2006) Global warming could cause sea levels to rise by four-and-a-half feet (140 cm) according to new projections published in Friday's issue of the jounral Science. Stefan Rahmstorf, a scietist at the Potsdam Institute for Climate Impact Research in Potsdam, Germany, uses air temperature measurements and past sea level changes rather than computer models to calculate that ocean levels could rise by 50-140 cm by 2100, well above the 9-88 cm projected by the United Nations Framework Convention on Climate Change. A 140 cm rise in sea levels could swamp low-lying cities like New York and Venice while causing catastrophic flooding in Bengladesh and South Pacific island nations.
Forests need good soil to sequester more carbon
(12/14/2006) Soil nutrition is key to helping forests absorb more carbon under elevated CO2 conditions according to new research by scientists with the USDA Forest Service and Duke University. "The researchers found that trees can only increase wood growth from elevated CO2 if there is enough leaf area to support that growth," reported the Southern Research Station of the USDA Forest Service in a statement. "Leaf area, in turn, is limited by soil nutrition; without adequate soil nutrition, trees respond to elevated CO2 by transferring carbon below ground, then recycling it back to the atmospheric through respiration."
Small insects tell us Earth is warming
(12/11/2006) Small insects known as midges are telling scientists that Earth is warming, according to research to be presented December 15 at the annual meeting of the American Geophysical Union in San Francisco.
Global warming could save NASA millions in fuel costs
(12/11/2006) Carbon dioxide emissions produced from the burning of fossil fuels will produce a 3 percent reduction in the density of Earth's outermost atmosphere by 2017, according scientists from the National Center for Atmospheric Research (NCAR) and Pennsylvania State University (PSU).
Melting glaciers, not ice sheets, primarily responsible for rising sea levels
(12/11/2006) A new study says that melting glaciers are contributing more to the global rise in sea levels than melting ice sheets in Greenland and Antarctica. Of the estimated 650 billion tons of ice lost to the oceans annually, some 400 billion tons comes from the melting of small glaciers and icecaps, according to Professor Tad Pfeffer of the Institute of Arctic and Alpine Research at the University of Colorado at Boulder. Only 250 billion tons -- or less than 40 percent -- comes from the melting of the Greenland and Antarctic ice sheets.
Global warming could make Arctic sea ice-free by 2040
(12/11/2006) Global warming is causing an abrupt retreat in Arctic sea ice that could leave the Arctic Ocean with ice-free summers by 2040 according to research published in the December 12 issue of Geophysical Research Letters.
Nuclear war could cause global cooling (i.e. block global warming)
(12/11/2006) Nuclear war would disrupt global climate for at least a decade according to new research presented Dec. 11 at the annual meeting of American Geophysical Union in San Francisco. The research, based on findings from historic volcano eruptions, found that a small-scale, regional nuclear war could produce millions of tons of 'soot' particles that could block solar radiation, in effect, cooling the planet.
UN says man's global warming impact lower than thought
(12/10/2006) When it is released in 2007, the UN Intergovernmental Panel on Climate Change (IPCC) will report that man's impact on global climate is less than previously believed according to a story published in the Sunday edition of the UK-based Telegraph. The Telegraph says that the report will reduce its estimate of man's role in global warming by 25 percent. However, the IPCC will still project global temperatures to climb by 4.5 C druing the next century and rising sea levels, albiet by half the amount -- 17 inches instead of 34 inches by 2100 -- projected by the IPCC's 2001 report. It will also note that atmospheric carbon dioxide levels have continued to climb over the past five years but that the overall human effect on global warming since the industrial revolution has been dampened by cooling caused by particulate matter and aerosol sprays, which accumulate in the upper atmosphere and reflect heat from the sun.
Past global warming suggests massive temperature shift in our future
(12/07/2006) If past climate change is any indication, Earth could be in store for some significant global warming according to research published in the December 8, 2006, issue of the journal Science. The work suggests that climate change skeptics may be fighting a losing cause. The study, led by Mark Pagani, associate professor of geology and geophysics at Yale, looked at an episode of rapid climate change that occurred some 55 million years ago. Known as the Paleocene-Eocene Thermal Maximum (PETM), the period was marked by a rapid rise in greenhouse gases that heated Earth by roughly 9 F (5 C), in less than 10,000 years. The climate warming caused widespread changes including mass extinction in the world's oceans due to acidification and shifts of plant communities due to changes in rainfall. The era helped set the stage for the "Age of Mammals," which included the first appearance of modern primates.
Global warming could reduce ocean productivity
(12/06/2006) Global warming could cause a rapid overall reduction in marine life resulting from diminished ocean productivity, according to a study published this week in the journal Nature. The researchers, led by Michael Behrenfeld of Oregon State University, say that the growth of phytoplankton -- the basis of the ocean food chain -- will likely be reduced by climate change.
Temperatures in European Alps at 1,300-year high
(12/05/2006) Temperatures in the European Alps are at the warmest point in 1,300 years according to the head of a European Union climate study.
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