Gore challenges PM on climate
Climate change is a bigger threat to world security than terrorism and the world's industrial countries must cut their greenhouse gas pollution before they can demand developing nations take action, says the former US vice-president, Al Gore. In Australia to promote his documentary about global warming, An Inconvenient Truth, Mr Gore dismissed the Howard Government's reasons for refusing to address climate change and said Australia was in a position to influence the US.

Wind turbines could ease energy crunch
The race to develop more energy from renewable sources could spark proposals to build large wind turbines in Lake Michigan within five years, according to a government energy expert. Because wind travels faster over water than land, the eastern half of Lake Michigan is considered an ideal place to build turbines that would generate electricity. Winds over the lake have the potential to produce vast amounts of electricity, possibly as much as the entire state currently uses, said John Sarver, technical-assistance supervisor for the state of Michigan's Energy Office.