Doubts surface over climate benefit of biofuels from corn residue

Using corn crop residue to make ethanol and other biofuels reduces soil carbon and can generate more greenhouse gases than gasoline, according to a study published today in the journal Nature Climate Change.

Scientists unmask the climate uncertainty monster

Scientific uncertainty has been described as a 'monster' that prevents understanding and delays mitigative action in response to climate change. New research by Professor Stephan Lewandowsky of the University of Bristol, and international colleagues, shows that uncertainty should make us more rather than less concerned about climate change.

Study: Warming climate may spread drying to a third of Earth

Increasing heat is expected to extend dry conditions to far more farmland and cities by the end of the century than changes in rainfall alone, says a new study.

Report: Sun's energy influences 1,000 years of natural climate variability in North Atlantic

Changes in the sun's energy output may have led to marked natural climate change in Europe over the last 1000 years, according to researchers at Cardiff University.

Claim: Food production in the northeastern US may need to change if climate does

If significant climate change occurs in the United States it may be necessary to change where certain foods are produced in order to meet consumer demand.

Arctic lakes show climate on thin ice

Ice in northern Alaska’s lakes during winter months is on the decline. Twenty years of satellite radar imagery show how changes in our climate are affecting high-latitude environments. Changes in air temperature and winter precipitation over the last five decades have affected the timing, duration and thickness of the ice cover on lakes in the Arctic.

2013 marked sustained long-term climate warming trend

NASA scientists say 2013 tied with 2009 and 2006 for the seventh warmest year since 1880, continuing a long-term trend of rising global temperatures. With the exception of 1998, the 10 warmest years in the 134-year record all have occurred since 2000, with 2010 and 2005 ranking as the warmest years on record.

Climate puzzle over origins of life on Earth

The mystery of why life on Earth evolved when it did has deepened with the publication of a new study in the latest edition of the journal Science.

Undersea mountains provide crucial piece in climate prediction puzzle

A mystery in the ocean near Antarctica has been solved by researchers who have long puzzled over how deep and mid-depth ocean waters are mixed. They found that sea water mixes dramatically as it rushes over undersea mountains in Drake Passage - the channel between the southern tip of South America and the Antarctic continent. Mixing of water layers in the oceans is crucial in regulating the Earth's climate and ocean currents.

Report: Carbon emissions to impact climate beyond the day after tomorrow

Future warming from fossil fuel burning could be more intense and longer-lasting than previously thought. This prediction emerges from a new study by Richard Zeebe at the University of Hawai'i who includes insights from episodes of climate change in the geologic past to inform projections of man-made future climate change.

Airborne campaign preps pollution-climate link probe

The floor of a NASA hangar and an adjacent laboratory in Southern California's high desert have been in constant motion this month as scientists prepare their instruments for installation on two of the agency's specialized science aircraft that will begin a major NASA airborne science campaign in early August.

Climate forecasts shown to warn of crop failures

Scientists found that in about one-third of global cropland, temperature and soil moisture have strong relationships to the yield of wheat and rice at harvest. For those two key crops, a computer model could predict crop failures three months in advance for about 20 percent of global cropland, according to the study, published July 21 in Nature Climate Change.

Report: Stone Age technological and cultural innovation accelerated by climate

Archaeological and genetic evidence suggests that modern humans (the modern form of Homo sapiens, our species) originated in Africa during the Stone Age, between 30,000 and 280,000 years ago.

Claim: Earth hottest in 1,400 years

Fueled by industrial greenhouse gas emissions, Earth's climate warmed more between 1971 and 2000 than during any other three-decade interval in the last 1,400 years.

Volcanoes trigger greenhouse effect

Earth's repeated flip-flopping between greenhouse and icehouse states over the past 500 million years may have been caused by volcanoes at particular spots where enormous amounts of carbon dioxide are released into the atmosphere.

A million and a half years of climate history revealed

Scientists say they've made a major breakthrough in understanding Earth's climate machine by reconstructing highly accurate records of changes in ice volume and deep-ocean temperatures over the last 1.5 million years.

Small volcanic eruptions can cool global climate

Even minor volcanic eruptions can release enough aerosols into the atmosphere to affect global temperatures, thanks to a boosting effect from weather systems such as monsoons.

Climate tipping point may be very close

We're perhaps just decades away from the tipping point that could alter the planet irreversibly, an international group of scientists has warned.

Nearby supernovae affect climate, and help life thrive

A Danish physicist has concluded that the explosion of nearby supernovae  has strongly influenced the development of life on Earth.

Envisat spacecraft loses contact with Earth

The European Space Agency (ESA) has lost contact with Envisat, its flagship Earth-observing satellite.