Posts Tagged ‘carbon dioxide’
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 - Mar 18, 2010 13:32 - 0 Comments
‘Livestock revolution’ taking a toll
STANFORD (US)—The growing worldwide demand for meat is likely to have a significant impact on human health, the environment, and the global economy in the next 50 years, according to a new report by an international research team. (more…)
Earth & Environment - Mar 8, 2010 15:37 - 0 Comments
Could higher CO2 slow biodiversity loss?
U. MINNESOTA (US)—For years, a global rain of nitrogen from fertilizers and exhaust fumes has been linked to losses of species diversity among communities of plants. However, new research shows that rising CO2 could mitigate the loss of biodiversity brought about by nitrogen pollution. (more…)
Earth & Environment - Jan 13, 2010 16:19 - 0 Comments
Future Forests: Beyond 2200
U. ILLINOIS—The composition of some U.S. forests might be quite different 200 to 400 years from today, a new study suggests. (more…)
Earth & Environment - Jan 8, 2010 15:21 - 0 Comments
Warmer temps stifle trees’ carbon uptake
U. COLORADO—As the climate warms and growing seasons lengthen, subalpine forests are likely to soak up less carbon dioxide. The result will be more greenhouse gas left to concentrate in the atmosphere, new research shows. (more…)
Earth & Environment - Dec 21, 2009 14:59 - 3 Comments
From space, daily snapshot of CO2 levels
TEXAS A&M (US)—Researchers studying climate now have a new tool at their disposal that yields daily global measurements of carbon dioxide and water vapor in a key part of Earth’s atmosphere. (more…)
Earth & Environment - Dec 14, 2009 17:29 - 7 Comments
Don’t blame cows for climate change
UC DAVIS (US)—Consuming less meat and dairy products will not help stop climate change, says Frank Mitloehner, despite claims by sources ranging from the United Nations to music star Paul McCartney. (more…)
Earth & Environment - Dec 1, 2009 11:19 - 3 Comments
Jumbo shellfish rule in acidic oceans
UNC CHAPEL HILL (US)—As the world’s seawater becomes more acidic due to rising atmospheric carbon dioxide, some—but not all—shelled marine creatures may become bigger and stronger, according to a new study. (more…)
Earth & Environment - Nov 24, 2009 18:12 - 12 Comments
Slow CO2 absorption may speed climate change
YALE (US)—The world’s oceans are absorbing less carbon dioxide, which could mean an acceleration in the pace of climate change, according to a new study. (more…)
Earth & Environment - Oct 29, 2009 11:31 - 0 Comments
Global shellfish dip linked to acidic oceans
STONY BROOK (US)—Relatively minor increases in ocean acidity brought about by high levels of carbon dioxide have significant effects on the growth and survival of hard clams, bay scallops, and Eastern oysters, new research finds. (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 23, 2009 15:33 - 2 Comments
‘Fixable’ error undercuts climate laws
PRINCETON (US)—A group of scientists has issued a report identifying a critical—but correctable—accounting error affecting climate legislation that could undermine efforts to reduce greenhouse gas emissions by encouraging deforestation. (more…)
Earth & Environment - Jul 20, 2009 12:28 - 1 Comment
Getting best eco-bang for biofuel buck
“Future carbon dioxide concentrations in the atmosphere will tell us when we’re kidding ourselves about what actually works. For carbon management, the atmosphere is the ultimate accountant,” says Princeton University’s Robert Socolow.
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)
Earth & Environment - Jul 14, 2009 17:12 - 0 Comments
Divvying up fair share of carbon emissions
“Most of the world’s emissions come disproportionately from the wealthy citizens of the world, irrespective of their nationality,” says physicist Shoibal Chakravarty, noting that many emissions come from lifestyles that involve airplane flights, car use and the heating and cooling of large homes. “We estimate that in 2008, half of the world’s emissions came from just 700 million people.”
Earth & Environment - Jul 9, 2009 14:39 - 1 Comment
Plants save Earth from icy doom
“Our research supports the emerging view that plants should be recognized as a geologic force of nature, with important consequences for all life on Earth,” says coauthor David Beerling from the University of Sheffield.
Science & Technology - Jun 10, 2009 6:00 - 2 Comments
Alligator lungs show how dinosaurs adapted
Biologist James Hicks studies alligators for insight into dinosaur survival in the prehistoric atmosphere. His findings shed light on how animals adapt to changing oxygen levels. (Credit: Daniel A. Anderson)
Earth & Environment - May 27, 2009 9:55 - 1 Comment
Tree-killing hurricanes worsen global warming?
TULANE (US)—A first-of-its-kind, long-term study of hurricane impact on U.S. trees shows storm damage can diminish a forest’s ability to absorb carbon dioxide, a major contributor to global warming. (more…)
