Climate chief warns of 'urgency' as CO2 levels rise
The UN's climate chief called for urgency Monday as she opened a new round of global talks amid warnings that Earth-warming carbon dioxide levels were approaching a symbolic threshold never seen in human ...
How hot did Earth get in the past? Scientists uncover new information
The question seems simple enough: What happens to the Earth's temperature when atmospheric carbon dioxide levels increase? The answer is elusive. However, clues are hidden in the fossil record. A new study ...
Ancient forests stabilized Earth's CO2 and climate
UK researchers have identified a biological mechanism that could explain how the Earth's atmospheric carbon dioxide and climate were stabilised over the past 24 million years. When CO2 levels became too low fo ...
Without plants, Earth would cook under billions of tons of additional carbon
(Phys.org) —Enhanced growth of Earth's leafy greens during the 20th century has significantly slowed the planet's transition to being red-hot, according to the first study to specify the extent to which ...
New study documents the natural relationship between CO2 concentrations and sea level
By comparing reconstructions of atmospheric CO2 concentrations and sea level over the past 40 million years, researchers based at the National Oceanography Centre, Southampton have found that greenhouse gas concentrations ...
Ice-free Arctic winters could explain amplified warming during Pliocene
Year-round ice-free conditions across the surface of the Arctic Ocean could explain why the Earth was substantially warmer during the Pliocene Epoch than it is today, despite similar concentrations of carbon dioxide in the ...
Microbe's innovation brought doom to Earth
The physical environment can produce sudden shocks to the life of our planet through impacting space rocks, erupting volcanoes and other events.
Scientists look beyond alarming milestone in carbon dioxide levels
The world made a down payment on decades of dangerous weather last month, reaching an average atmospheric carbon dioxide level above 400 parts per million.
Bubble-propelled microrockets could operate in the human stomach
High CO2 spurs wetlands to absorb more carbon
(Phys.org) —Under elevated carbon dioxide levels, wetland plants can absorb up to 32 percent more carbon than they do at current levels, according to a 19-year study published in Global Change Biology from t ...
Cutting specific pollutants would slow sea level rise, research says
With coastal areas bracing for rising sea levels, new research indicates that cutting emissions of certain pollutants can greatly slow down sea level rise this century.
Climate scientists underwhelmed by Copenhagen Accord
Top climate scientists said Saturday that the eleventh-hour political deal hammered out at UN talks in Copenhagen falls perilously short of what is needed to stave off catastrophic global warming.
Carbon dioxide could reduce crop yields
High-yielding dwarf plant varieties lose their advantage due to increasing carbon dioxide concentration.
Historic carbon peak soon to become global average, WMO says
After seeing carbon dioxide levels in the atmosphere surpass a historic threshold last week, the world should brace for the new peak level to soon become the global annual average, the World Meteorological ...