California Governor Jerry Brown enlisted help from UC Berkeley palaeoecologist
![Gov. Jerry Brown discussing Earth’s tipping point with UC Berkeley professor Tony Barnosky at the WEST Summit 2013. Image: Rob Jordan/Stanford Woods Institute for the Environment.](/sites/default/files/news_images/Brown-with-globe350.jpg)
UC Berkeley’s Anthony Barnosky and his wife, Elizabeth Hadly, a palaeoecologist at Stanford University, are featured in Nature for their work on the 30-page statement, “Maintaining Humanity’s Life Support Systems in the 21st Century.”
Responding to a challenge by California Gov. Jerry Brown, Barnosky, Hadly, and more than 500 of the world’s top global change scientists outlined the main environmental issues – from climate change to pollution and population growth – that policy makers must address immediately to avoid an approaching global tipping point.
Read the Nature News Feature, Science and politics: Hello, Governor.