Over millennia, animals including walruses, seals, lemmings, muskox and migratory birds evolved to survive the polar north’s extreme cold. But on land and at sea, wildlife are struggling to adapt to a rapidly warming climate and altered ecosystems.
Human actions are rapidly changing the world’s oceans, whether through overfishing, pollution or coastal development. But among the most intense pressures placed on the seas right now is humanity’s ongoing…
New research shows that marine heat waves last longer in deeper water, increasing the possibility of species displacement or mortality. Marine heat waves, defined as events where ocean temperatures rise…
Andres Peña Castro and his team didn’t set out to track sea ice. Their original plan was to quantify the interactions between ocean, earth and atmosphere to be able to…
Emperor penguins in the Antarctic are suffering a “catastrophic” breeding failure as the region’s sea ice vanishes, pointing to a grim future for a species highly susceptible to the impacts…
The south polar region long seemed resistant to climate change, but as warming intensifies, impacts are being identified across the region. While signs of an irreversible tipping point are lacking, Antarctic changes will likely affect the rest of the world.
New research finds that a record Arctic sea ice melt season in 2007 initiated a “regime shift” to thinner, more transient ice that may be “irreversible”; another study shows that atmospheric rivers from the south are warming the Arctic in winter.
As Arctic sea ice begins melting out fully in summer, the frequency of strong El Niños could increase by 35% by century's end, causing extreme weather events to increase, says recent modeling study.
Discussions about the Greenland ice sheet often focus on what it’s losing. But from around the edges of the rapidly melting Greenland ice sheet, a global commodity is being created.…
Sea ice extent didn’t reach record lows this summer, but air temps over Greenland and ocean temps in some Arctic seas were extraordinarily high. Polar warming also likely continues influencing global extreme weather events, scientists say.
Antarctic krill — tiny, filter-feeding crustaceans that live in the Southern Ocean — have long existed in mind-boggling numbers. A 2009 study estimated that the species has a biomass of…
Arctic sea ice extent continued its trending decline in winter 2022, while the Antarctic saw a record low summer minimum extent. Both regions also saw extraordinarily high temperatures for this time of year.
The crew of the M/V Arctic Sunrise, an icebreaker vessel owned by Greenpeace, were sailing through Antarctica’s Weddell Sea this month when they saw something they didn’t expect. “One of…
Though September sea ice extent appeared to offer a short-term recovery this fall, “that’s not the full story,” says one Arctic scientist, with low ice concentration seen in 2021, and lack of multiyear ice setting a new record.
Researchers are seeking to pinpoint climate change “tipping points,” but defining what that means exactly, when it will come, and what makes it happen, is unimaginably difficult when faced with the chaotic complexities of a vast Earth biome.
Sea ice fell to its lowest extent on record for this time of year, while new studies find Arctic coastal ice may be receding 70-110% faster than thought, winter ice is failing to regrow fully, and last multi-year ice refuge is under assault.
New research finds that ice in both polar regions, and especially sea ice, is disappearing at a quickening rate, while in the Arctic the last stronghold of multiyear ice is under assault from warming.
A new study has found that sea levels are rising faster than expected, which would put 40% of the world’s population living in coastal regions at elevated risk. Published Feb.…
Over the past twenty years the concept of "tipping points" has become more familiar to the public. Tipping points are critical thresholds at which small changes can lead to dramatic…
The solitude of the north is changing. George Angohiatok noticed this quite graphically a decade ago when, after returning to Iqaluktuuttiaq (or Cambridge Bay, as it was renamed by settlers), he observed…
The Arctic is setting records for low sea ice extent for this time of year, with the 2020 refreeze now 500,000+ square kilometers behind a record set in 2019 — a sign the region may be entering a new climate regime.
2020 didn’t eclipse all-time record-holder 2012, but it came pretty close; also, the Arctic’s growing heat is likely intensifying Asia’s extreme weather, while waters just beneath the ice are getting increasingly warm.
Temps as high as 100 degrees Fahrenheit in Siberia have triggered record Arctic sea ice melt, raging wildfires, permafrost thaw, and an Arctic oil spill.
April and May saw record intense Arctic heat. Now some scientists are asking whether an absence of industrial sulfate aerosol pollutants, which reflect solar energy, could be the cause.
Multiple studies show that Arctic warming is altering temperate and equatorial weather. Now, new research finds that Antarctic ice melt could be a major tropical change agent too.
New research offers early evidence that the Arctic and tropics are no longer a world apart; melting sea ice may be intensifying equatorial trade winds and emergence of El Niño.
1. Climate change and oceans Climate change impacts on land made almost daily headlines this year: fires, floods, more extreme storms. Equally intense effects are being realized in our seas.…
For seabirds, an Arctic Ocean with less sea ice could provide some tantalizing alternatives to the long-haul flights that some undertake each year. In a recent study, ecologist Manon Clairbaux…
New report reveals how both the Arctic and Antarctic are heating up and changing dramatically amid ongoing, but largely insufficient, UN climate negotiations.
Climate change could be carving a path for dangerous diseases through the Arctic, allowing them to spread between species of susceptible marine mammals, according to a recent study. Researchers have…
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Land rights and extractives
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Indonesia's Forest Guardians
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Southeast Asian infrastructure
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