Global Warming threshold for Greenland Ice Sheet collapse reduced to 1.6 degrees C

New research from the Potsdam Institute for Climate Impact Research and Universidad Complutense de Madrid has lowered the best estimate for the irreversible collapse of the Greenland Ice Sheet down to 1.6 °C, making the ice sheet more vulnerable than previously thought to global warming. The previous best estimate was 3.1 °C. As we currently have 0.8 °C of global warming, by the middle of the

Global Warming means 20 Metre sea level rise in the pipeline say scientists

Scientists studying the geological record have determined that at slightly above current temperatures we are about 20 metres below what the sea level equilibrium should be. Sea levels are increasing and forecast to rise at least a metre this century (although there is a low probability they could be higher than this), much of the change in sea level will occur over several hundred or thousands of

Carnaby's Cockatoo suffers 37 per cent population decline in one year

Flocks of Carnaby's Black Cockatoo are iconic sights for the people of Perth, the Swan River Region and the forests of the South west. But comparing two population surveys in 2010 and 2011 showed a 37 percent decline in numbers across the Swan river region. That is a 37 per cent decline in one year.
According to Statistical modelling based on the 2011 Great Cocky Count the population of Carnaby’s

Ocean acidification increasing at unprecedented rate not seen in last 300 million years

In a new study marine scientists warn that the rate of ocean acidification presently occurring is unprecedented in the last 300 million years. This is due to dissolving carbon dioxide from the atmosphere, much of which human activity has contributed over the last 200 years through the use of fossil fuels. The extent of the acidification and rate of acidification enhances the prospect for a mass

Paul Gilding at TED: Choosing life over fear - The coming war for a sustainable civilisation

This talk by sustainability campaigner Paul Gilding is both pessimistic and optimistic about the future of human civilisation facing numerous planetary crises including human overpopulation, overuse of resources, anthropogenic climate change, and biodiversity loss. The earth is now full. Human civilisation is facing a great disruption this century, within our lifetimes.
Economic growth as we

Victorians want Baillieu State Government to act on climate change, clean energy

Most Victorians want more action on climate change and renewable energy from the Baillieu State Government according to a new public opinion survey commissioned by Environment Victoria.
The survey was conducted in late December 2011 and early January 2012 involving a series of questions to over 1000 people in Victoria conducted by Essential Media, a professional market survey company. The primary

James Hansen at TED: Why I must speak out about climate change

Recorded for TED on Feb. 29 2012 at Long Beach, Cal and posted in March, this video provides a succint account of Dr James Hansen's career as a climate scientist and why he campaigns for action on climate change. He has in recent years engaged in civil disobedience being arrested on a number of occasions campaigning specifically against the highly destructive and polluting practice of

Sea ice volume: Multi-year arctic sea ice reducing dramatically

A new study has noted a substantial decadal decline in the Arctic Multiyear ice cover. While ice extent has been shrinking, much of this is seasonal ice that reforms each winter and can grow with variable weather factors such as changes in temperature, wind, weather and ocean currents. A reduction in the thicker multiyear ice indicates a much greater impact and collapse of sea ice is evident.

Greenpeace activists say Coal ship highlights 'Reef in Danger'

Greenpeace activists targeted a bulk coal carrier in Gladstone harbour early this morning. They painted 'reef in danger' on the side of the ship around dawn from two inflatable boats to highlight the massive expansion of coal port facilities and shipping through the World Heritage listed Great Barrier Reef. The action was undertaken to highlight the threat to the Greet Barrier Reef from