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War, plague no match for deforestation in driving CO2 buildup

Stanford, CA -- Genghis Khan and his Mongol hordes had an impact on the global carbon cycle as big as today's annual demand for gasoline. The Black Death, on the other hand, came and went too quickly for it to cause much of a blip in the global car...

Shrinking snow and ice cover intensify global warming

ANN ARBOR, Mich.---The decreases in Earth's snow and ice cover over the past 30 years have exacerbated global warming more than models predict they should have, on average, new research from the University of Michigan shows. To conduct this s...

‘Greener’ climate prediction shows plants slow warming

GREENBELT, Md. -- A new NASA computer modeling effort has found that additional growth of plants and trees in a world with doubled atmospheric carbon dioxide levels would create a new negative feedback -- a cooling effect -- in the Earth's c...

AGU highlights: Nov. 22, 2010

The following highlights summarize research papers that have been recently published in Geophysical Research Letters (GRL), Water Resources Research (WRR), and Journal of Geophysical Research - Earth Surface (JGR-F). In this release: Changing...

Study rewrites the evolutionary history of C4 grasses

CHAMPAIGN, Ill. -- According to a popular hypothesis, grasses such as maize, sugar cane, millet and sorghum got their evolutionary start as a result of a steep drop in atmospheric carbon dioxide levels during the Oligocene epoch, more than 2...

New research changes understanding of C4 plant evolution

Frostburg, Md. (November 15, 2010) -- A new analysis of fossilized grass-pollen grains deposited on ancient European lake and sea bottoms 16-35 million years ago reveals that C4 grasses evolved earlier than previously thought. This new evidence cas...

Extreme global warming in the ancient past

Variations in atmosphere carbon dioxide around 40 million years ago were tightly coupled to changes in global temperature, according to new findings published in the journal Science. The study was led by scientists at Utrecht University, worki...

Scrambling for climate change solutions

The food industry generates a lot of waste products, but one of these, eggshells, could help combat climate change, according to research published in the International Journal of Global Warming this month. Basab Chaudhuri of the University of Cal...

UF research gives clues about carbon dioxide patterns at end of...

GAINESVILLE, Fla. -- New University of Florida research puts to rest the mystery of where old carbon was stored during the last glacial period. It turns out it ended up in the icy waters of the Southern Ocean near Antarctica. The findings have i...

Geo-engineering and sea-level rise over the 21st century

Scientific findings by international research group of scientists from England, China and Denmark just published suggest that sea level will likely be 30-70 centimetres higher by 2100 than at the start of the century even if all but the most aggr...

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