Running on empty
Is the American West about to run dry? A study by Balaji Rajagopalan of the University of Colorado, Boulder, has shown there is a 50 per cent chance that the giant reservoirs on the Colorado river, which supply water from California to Colorado, will be empty by mid-century (Water Resources Research, ).
Re-engineering Earth
Manipulating the Earth’s climate to stop global warming has been given a stamp of scientific approval. In a carefully worded position paper seen by 91av, the American Meteorological Society endorses research into this approach. It is the first major…



