Month: March 2015

  • Invasive Carp Look for Love in all the Right Places

    If you’re looking for love and there are ten bars in town, your chance of meeting someone is 10 per cent.  In a town with only one bar, your odds are 100 per cent. The same thing happens in nature and is called landmarking. Butterflies and other species find mates by gathering at easily identifiable locations…

  • What Lake Tahoe tells us about a changing climate

    A recently published study on how natural and man-made sources of nitrogen are recycled through the Lake Tahoe ecosystem provides new information on how global change may affect the iconic blue lake.“High-elevation lakes, such as Lake Tahoe, are sentinels of climate change,” said Lihini Aluwihare, associate professor of geosciences at Scripps Institution of Oceanography (SIO)…

  • Princeton University geologists mapping the Earth's mantle in 3D

    When a 7.9-magnitude earthquake struck central China's Sichuan province in 2008, seismic waves rippled through the region, toppling apartment houses in the city of Chengdu and swaying office buildings 1,000 miles away in Shanghai.Though destructive, earthquakes provide benefit in one respect: they help researchers learn about the structure of the Earth, which in turn could…

  • Social Status has Impact on Wild Animals

    High social status has its privileges ­­when it comes to aging – even in wild animals.In a first-of-its-kind study involving a wild species, Michigan State University researchers have shown that social and ecological factors affect animal health. The results, published in the current issue of Biology Letters, focused on spotted hyenas in Kenya.“High-ranking members in…

  • Why post-fire logging is important

    Harvesting fire-killed trees is an effective way to reduce woody fuels for up to four decades following wildfire in dry coniferous forests, a U.S. Forest Service study has found.

  • Bristol University sheds new light on early terrestrial vertebrate

    The first 3D reconstruction of the skull of a 360 million-year-old near-ancestor of land vertebrates has been created by scientists from the Universities of Bristol and Cambridge. The 3D skull, which differs from earlier 2D reconstructions, suggests such creatures, which lived their lives primarily in shallow water environments, were more like modern crocodiles than previously thought. 

  • Saturn's moon Enceladus is spewing tiny silica grains, new study finds

    A new study by a team of Cassini mission scientists led by the University of Colorado Boulder have found that microscopic grains of rock detected near Saturn imply hydrothermal activity is taking place within the moon Enceladus.The grains are the first clear indication of an icy moon having hydrothermal activity, in which seawater infiltrates and…

  • Could China & India's Air Pollution be behind our Cold, Snowy Winters?

    It's March. It's freezing. And there's half a foot of snow on the ground. When is this winter going to end?Many scientists think that climate change might be one cause of this year's "snowpocalypse" in Boston and bitter cold snaps in New York and Washington.But physicists at NASA's Jet Propulsion Laboratory have been looking into…

  • CO2 increase may intensify future droughts in tropics

    A new study suggests that increases in atmospheric CO2 could intensify extreme droughts in tropical and subtropical regions — such as Australia, the southwest and central United States, and southern Amazonia — at much a faster rate than previously anticipated, explains University of Texas at Austin professor Rong Fu in a commentary in the March…

  • Why Do We Have Daylight Savings Time?

    We lost an hour this morning, awaking to an already sunny sky. Some may feel robbed an hour from their day. So why, again, do we do this?To some degree, we may have Benjamin Franklin to thank.