Researchers simulated the carbon balance of almost 400,000 square miles of the Canadian forest over the past 60 years, to determine the relative impacts of climate and disturbance by wildfire on the forest's carbon balance. (University of Wisconsin-Madison press release)

Large-scale fires in a western or southeastern state can pump as much carbon dioxide into the atmosphere in a few weeks as the state's entire motor vehicle traffic does in a year, according to new research. (National Center for Atmospheric Research press release)

New evidence, based on mineral dating, suggests that rocks of the Blue Mountains, the oldest geological formation in Oregon, may have been derived from the Klamath and Sierra Nevada mountain chains, University of Oregon researchers report. (University of Oregon press release)

Despite decades of ever more exacting science projecting Earth's warming climate, there remains large uncertainty about just how much warming will actually occur. (University of Washington press release)

Agricultural soil erosion is not a source of carbon dioxide to the atmosphere, new research suggests. (University of California - Davis press release)

Earth may have first supported an oxygen-rich atmosphere 500 million years ago when upheavals in Earth's crust initiated a kind of reverse-greenhouse effect that cooled the world's oceans, spawned giant plankton blooms and sent a burst of oxygen into the atmosphere. (Ohio State University press release)

A team of scientists has identified a new likely source of a spike in atmospheric methane coming out of the North during the end of the last ice age. (University of Alaska Fairbanks press release)

The catastrophic fires that are sweeping Southern California are consistent with what climate change models have been predicting for years, and they may be just a prelude to many more such events in the future, experts say. (Oregon State University press release)

A decline in the proportion of carbon dioxide emissions absorbed by land and oceans is speeding up the growth of atmospheric CO2, according to new research. (CSIRO Australia)

Further evidence for the decline of the oceans' historical role as an important sink for atmospheric carbon dioxide is supplied by new research by environmental scientists, who have taken measurements for a decade from merchant ships plying the North Atlantic. (University of East Anglia press release)

The analysis of a tiny green alga has uncovered hundreds of genes that are uniquely associated with carbon dioxide capture. (DOE/Joint Genome Institute press release)

From 135,000 to 90,000 years ago tropical Africa had megadroughts more extreme and widespread than any previously known for that region, according to new research that is providing insights into humans' migration out of Africa and the evolution of fish in Africa's Great Lakes. (University of Arizona press release)

Summer nights in Ohio aren't cooling off as much as they used to, and it's likely a sign of climatic warming across the state, researchers say. (Ohio State University press release)

For the first time, geologists have extracted intact rock samples from two miles beneath the surface of the San Andreas Fault, the infamous rupture that runs 800 miles along the length of California. (Stanford University press release)

A comprehensive assessment of Australia's climate, jointly released today, projects the changes in temperature, rainfall and other aspects of climate that can be expected over coming decades as a result of continued global emissions of greenhouse gases. (CSIRO Australia press release)