Category: News

  • Geoengineering for Global Warming: Increasing Aerosols in Atmosphere Would Make Sky Whiter

    One idea for fighting global warming is to increase the amount of aerosols in the atmosphere, scattering incoming solar energy away from Earth’s surface. But scientists theorize that this solar geoengineering could have a side effect of whitening the sky during the day. New research from Carnegie’s Ben Kravitz and Ken Caldeira indicates that blocking…

  • North Korea lifts the veil on its agroforestry practices

    A new study offers a rare glimpse into North Korea’s agriculture and forestry policies, and may open up new international connections with the country, say researchers. The report describes how locally appropriate, participatory agroforestry is helping reverse food shortages and land degradation.

  • Landslides and Tectonics

    When do mountain landslides occur? Mountain ranges are formed with sharp and steep ridges due to tectonics. When do they become unstable? Some of the steepest mountain slopes in the world got that way because of the interplay between terrain uplift associated with plate tectonics and powerful streams cutting into hillsides, leading to erosion in…

  • The Last Extinction Event

    The Permian–Triassic extinction event, sometimes known as the Great Dying, was an extinction event that occurred 250 million years ago, forming the boundary between the Permian and Triassic geologic periods, as well as the Paleozoic and Mesozoic eras. It was the Earth’s most severe known extinction event, with up to 96% of all marine species…

  • Conserving the Wild West: Arizona’s green dream

    The cowboys and Indians are still there but there’s more to America’s 48th state than reliving the glory days of the Wild West. Home to seven different ecosystems, it is leading the way in conservation and green tourism. Ruth Styles went to find out more.

  • Climate Change Doubt not due to ignorance of the science

    A new study has dispelled the myth that the public are divided about climate change because they don’t understand the science behind it. And the Yale research published today reveals that if Americans knew more basic science and were more proficient in technical reasoning it would still result in a gap between public and scientific…

  • Soft-Shell Lobsters arrive early in Maine

    April and May are fairly quiet times for Maine lobstermen and women, with the height of the summer season still a couple of months away. This year, strange things are happening on the ocean floor. Many of the lobsters have prematurely shed their hard shells, and lobstermen are hauling large numbers of soft-shelled lobsters much…

  • Canada closing its marine pollution program

    Canada has been sending letters to government scientists notifying them that their jobs will be eliminated or affected by the closure of the country’s marine pollution program — but at least one isn’t going without making some noise. “It’s perplexing that we face the loss of this program, given the 25,000 chemicals on the market…

  • Volcanic Crystal Growth

    Volcanoes tend to be unpredictable. It would be nice to know when and why an eruption may occur. A forensic approach that links changes deep below a volcano to signals at the surface is described by scientists from the University of Bristol in a paper published today in Science. The research could ultimately help to…

  • Plastic Bags to be Banned in the City of Angels

    Plastic bags are perhaps the largest source of waste from our modern consumer culture. Stores give them out without question for all products big and small. Later, they can be found littered on the sides of roads and highways, hanging from tree branches, floating in rivers and clogging up our landfills. Now, a new plastic…