Posts Tagged ‘climate’
Science & Technology - Jun 4, 2010 10:58 - 0 Comments
Early haze likely shaded Earth from UV
U. COLORADO (US)—A thick organic haze that enshrouded early Earth several billion years ago may have been similar to the haze now hovering above Saturn’s largest moon, Titan, and would have protected primordial life on the planet from the damaging effects of ultraviolet radiation. (more…)
Science & Technology - May 27, 2010 14:09 - 0 Comments
Mysteries of Martian ice cap solved
TEXAS-AUSTIN (US)—Scientists have reconstructed the formation of two curious features in the northern ice cap of Mars—a chasm larger than the Grand Canyon and a series of spiral troughs—solving a pair of mysteries dating back four decades—while also finding new evidence of climate change on Mars. (more…)
Earth & Environment - Apr 21, 2010 17:23 - 3 Comments
Global weirding: It’s getting hot in here
U. ILLINOIS (US)—Global temperatures of the last decade are higher than they have been in more than 2,000 years—and manmade emissions from heat-trapping gases are largely responsible, according to climate expert Donald Wuebbles. (more…)
Science & Technology - Mar 25, 2010 12:35 - 1 Comment
Climate mayhem let dinosaurs dominate
BROWN (US)—Widespread volcanic eruptions and a spike in atmospheric carbon dioxide wiped out dinosaurs’ biggest competitors, according to a new climate analysis, allowing dinosaurs to rule the Earth more than 200 million years ago. (more…)
Earth & Environment - Feb 26, 2010 18:13 - 1 Comment
Past cyclones predict stormy future?
YALE (US)—More frequent tropical cyclones in Earth’s ancient past contributed to persistent El Niño-like conditions, a finding that could have implications for the planet’s future as global temperatures continue to rise due to climate change. (more…)
Science & Technology - Dec 30, 2009 13:26 - 4 Comments
Putting a lander on Earth’s ‘evil twin’
U. COLORADO (US)—What would it take to land a spacecraft on Venus? NASA has asked a research team at the University of Colorado at Boulder to help answer that question with a detailed, one-year concept study to examine the planet’s surface, climate, and atmosphere—and to predict its ultimate fate in the solar system. (more…)
Earth & Environment - Dec 1, 2009 13:30 - 2 Comments
How much snow? Check your GPS
U. COLORADO (US)—Researchers have found a clever way to use traditional GPS satellite signals to measure snow depth as well as soil and vegetation moisture, a technique expected to benefit meteorologists, water resource managers, climate modelers, and farmers. (more…)
Earth & Environment - Nov 23, 2009 14:12 - 2 Comments
Life thrived in early Earth’s cooler temps
STANFORD/TEXAS A&M/YALE (US)—Billions of years ago, the Earth’s climate was far cooler—perhaps by more than 50 degrees than previously believed—which could mean conditions were more conducive for life all over the planet, new findings suggests. (more…)
Earth & Environment - Nov 9, 2009 14:28 - 3 Comments
North Carolina sea level rises at faster pace
U. PENN (US)—An international team of environmental scientists has shown that sea-level rise, at least in North Carolina, is accelerating. The increase during the 20th century is three times higher than the rate of sea-level rise during the last 500 years. (more…)
Earth & Environment - Oct 26, 2009 16:29 - 0 Comments
CO2 not the only gorilla in the room
UC BERKELEY (US)—When world leaders meet in Copenhagen in December to hash out a treaty limiting carbon dioxide emissions, they should begin planning a future summit to address other pollutants—from soot to ozone—that don’t remain in the atmosphere as long as carbon dioxide, but nevertheless are major contributors to global warming. (more…)
Earth & Environment - Oct 8, 2009 16:42 - 0 Comments
Big job for oceans’ tiny ammonia eaters
U. WASHINGTON (US)—It’s not every day you find clues to the planet’s inner workings in aquarium scum. But that’s what happened when researchers cultured a tiny organism from the bottom of a Seattle Aquarium tank and found it can digest ammonia. (more…)
Earth & Environment - Oct 6, 2009 15:49 - 1 Comment
Pollution-haze mix may affect world’s weather
TEXAS A&M (US)—“Blue haze,” a common occurrence in mountain ranges and forests around the world, is formed by natural emissions of chemicals, but a recent study suggests human activities can worsen it to the point of affecting weather worldwide, potentially causing climate problems. (more…)
Earth & Environment - Jul 16, 2009 13:25 - 2 Comments
Carbon not the only culprit in global warming?
Mean surface temperature anomalies during the period 1999 to 2008 with respect to the average temperatures from 1940 to 1980. (Courtesy: Robert A. Rohde/Wikipedia)
