August 29, 2013 Greenland is covered in an ice layer that's up to 2 miles thick. But below the ice, there's a vast terrain of bedrock. Now scientists have found a mega-canyon there, twice the size of the one in Arizona. The hidden canyon is drawing oohs and aahs from scientists around the world.
August 29, 2013 The Earth's average annual temperature has been rising for decades, but not in the last 15 years — colder winters and hotter summers notwithstanding. Now scientists offer evidence that this "pause" in average warming is because a cooler Pacific is temporarily taking up more heat than usual.
August 23, 2013 Climate skeptics point to 15 years of no warming trend as a reason to doubt global warming. But Kevin Trenberth at the National Center for Atmospheric Research can explain a good bit of that temperature plateau — and he argues the Earth has continued to warm appreciably, even though our thin blanket of atmosphere hasn't.
August 22, 2013 When Republicans on Capitol Hill want to hear reasons not to take strong action on climate change, sometimes they call on Judith Curry to testify. The climatologist has staked out an unusual position on the subject: She says the climate is changing and people are partly responsible, but we shouldn't bother regulating carbon dioxide.
August 8, 2013 Carbon dioxide levels in the atmosphere cycle up and down as plants take it up in the summer and let some of it out in the winter. Over the past 50 years, these "breaths" have gotten larger, as plants in the Arctic are taking up more carbon dioxide during the warmer summers.
August 2, 2013 Paleontologists have been spending a lot of time studying the Earth of 50 million years ago, which was much hotter than it is today. They're hoping a glimpse into the planet's geologic past will show them how the planet will respond to all the carbon dioxide we're now putting into the air.
July 31, 2013 Oil developers in the Canadian Tar Sands are trying to understand some odd oil eruptions around several drilling platforms where oil is coming up through the ground rather than through the wells they drilled. The latest of these events tarred about 50 acres of forest.
July 30, 2013 Scientists are squaring off yet again on the question of why some mammals are monogamous. A new paper argues that monogamy is most likely the result of males trying to protect their youngsters from murderous rivals. A second study says monogamy in mammals evolved in species where females were scattered about.
July 24, 2013 Biologists have discovered they can track hard-to-see species in streams, ponds and even the ocean by sampling the water for DNA. Scientists say the technique is an important conservation tool: So far, it's been used to track declining giant salamanders and even locate a rare whale.
July 16, 2013 Biologists who study the lives of animals can learn a lot simply by listening to them. The problem is that natural sounds can be far easier to record than to analyze. So scientists are working to automate the process with automated systems that do the identifying for them.
July 12, 2013 Diplomats from 24 nations and the European Union are meeting in Germany next week to discuss creating a nature preserve that could be larger than three times the size of Texas. Stretches of water around Antarctica are relatively pristine and home to thriving ecosystems.