The Amazongate fiasco

Amazongate may land Sunday Times in hot water A claim published in the Sunday Times over the veracity of a statement published in an Intergovernmental Panel on Climate Change (IPCC)…

NASA: Arctic melt season lengthening

Newly released images from NASA and the National Snow and Ice Data Center show that the Arctic's melt season has lengthened significantly over the past few decades. The melting season—i.e.…

Tales From A Frozen Zoo

"No one would have ever predicted that we could turn the cells in our collection into stem cells and that you would be able to clone animals from these (stem)…

城市的白屋顶可以降温

地球物理研究快报报道了一项新的研究,该研究表明把城市的屋顶描绘成白色可以有效地抵消一些城市热岛效应和甚至降低城市温室气体的排放。 “我们的研究表明,白色屋顶至少可以在理论成为有效减轻城市热的方法,” Keith Oleson说,他是该研究的负责人,是国家大气研究中心(NCAR)的科学家。“这还有待观察,即使把城市的屋顶油漆成白色是可行的,但这种想法肯定需要进一步的调查证明。” 白色屋顶在城市风景中将充当一些镜子的作用,把一些太阳的热量反射回大气中。使用计算机模型模拟研究发现,理想的白色屋顶可以减轻33%的热导效应,把城市的温度的降低0.4℃(0.7华氏温度)。由于建模系统无法重现复杂的整个城市环境,如灰尘、风化以及描绘的障碍,效果可能会降低,但是仍然是很有意义的。 这个效果同样会降低室内温度,将使热城市的居民更少的使用空调以节约能源,从而降低温室气体排放。研究人员指出,某些类型的城市同其它城市相比将更有益,例如高密度的屋顶、特定的屋顶类型以及温暖的气候。 在具体的大城市来看,研究发现,通过把屋顶描绘成白色可以在夏季将纽约地区的温度降低1.1℃(2华氏度)。

Half of Indonesia’s species remain unknown

Incorporating 17,000 tropical islands, Indonesia is one of the world's richest areas of biodiversity. However, according to the Jakarta Post, over half of this biodiversity remains unrecorded with only 20…

Jumbo squid explosion

Jumbo squid are back in the waters of Southern California and anglers are seeing an uptick in business, reports the Los Angeles Times. The newspaper notes that more than 1,000…

Why are predators important?

Lion with kill in Ngorongoro Crater, Tanzania. Photo by Rhett A. Butler, 2007 Why top predators matter: an in-depth look at new research (02/02/2010) Few species have faced such vitriolic…

The secret life of a Californian pest

"Waka, waka." The acorn woodpecker is best known for its chortle, which may have inspired Woody the Woodpecker's iconic laugh. But many California residents say there's nothing funny about the…