Climate & Climate Change

A full recovery of the stratospheric ozone hole could modify climate change in the Southern Hemisphere and even amplify Antarctic warming, according to scientists from the University of Colorado at Boulder, the National Oceanic and Atmospheric … [Read more...] about Ozone Hole Recovery Could Modify Southern Hemisphere Climate

Human beings may have had a brush with extinction 70,000 years ago, an extensive genetic study suggests. The human population at that time was reduced to small isolated groups in Africa, apparently because of drought, according to an analysis … [Read more...] about Humans Nearly Wiped Out 70,000 Years Ago?

When paleoclimatologists met in 1972 to discuss how and when the present warm climate would end, termination seemed imminent and it was expected that rapid cooling would lead to the coming ice age. These ideas were based on the 1M year analogue for … [Read more...] about Signals for a Coming Ice Age: A Note from Peter Harris

THE amount of two key greenhouse gases in Earth's atmosphere rose sharply in 2007, and carbon dioxide levels this year are literally off the chart, the US government reported today. In its annual index of greenhouse gas emissions, the US National … [Read more...] about Carbon dioxide and Methane Levels rise in 2007

AN Adelaide professor says scientists must do more to stand up to "anti-intellectual" climate change deniers, by explaining the difference between good science and spin. University of Adelaide Professor Barry Brook, director of the Research … [Read more...] about Adelaide Professor: Scientists Must Confront Climate Sceptics

Phil Chapman is a geophysicist and astronautical engineer who lives in San Francisco. He was the first Australian to become a NASA astronaut. Excerpt: The first sunspot appeared in January this year and lasted only two days. A tiny spot appeared … [Read more...] about First Australian NASA Astronaut: An Ice Age Cometh