The Grand Canyon is a national icon. But the amazing lands around it are threatened by uranium mining. Tell President Obama to protect this treasure by naming the Greater Grand Canyon Heritage National Monument.
Obama to Create World’s Largest Marine Reserve Off Hawaii
The first data-driven estimate of the Earth's total supply of groundwater shows that less than six per cent of groundwater in the upper two kilometers of the Earth's landmass is renewable within a human lifetime. The study, in Nature Geoscience, is led by Dr. Tom Gleeson of the University of Victoria with co-authors at the University of Texas at Austin, the University of Calgary and the University of Göttingen.