The director of the UN’s Food an Agriculture Organization has warned that climate change will likely create an increasing number of food crises across the world over the next 20 years. The Guardian reports on a new paper in Nature Geoscience which says that climate change will also adversely affect the U.S. Gulf Coast, warning that up to 13,500 square kilometers of coastal lands surrounding New Orleans will be underwater by the turn of the century. In other news, the United States has joined the International Renewable Energy Agency, a new organization founded in January. Meanwhile, Secretary of the Interior Ken Salazar is pushing hard for the development of renewable sources, announcing measures that aim to hasten the development of solar energy projects on federal lands. Finally, a consortium led by BP has accepted a contract to develop the Rumaila oil field in Iraq – the country’s largest – after the contract was rejected by the Exxon Mobil-led consortium which originally won the bidding process.