Just in case you didn't have enough to worry about... The most comprehensive survey ever into the state of the planet concludes that human activities threaten the Earth's ability to sustain future generations. The report says the way society obtains its resources has caused irreversible changes that are degrading the natural processes that support life on Earth. This will compromise efforts to address hunger, poverty and improve healthcare. The Millennium Ecosystem Assessment was drawn up by 1,300 researchers from 95 nations over a period of four years. http://news.bbc.co.uk/1/hi/sci/tech/4391835.stm This study (the MA) has cost some $20m to put together. It was funded by the Global Environment Facility, the United Nations Foundation, the David and Lucile Packard Foundation, the World Bank and others.