Deserts like the American Southwest are expected to get drier as the climate warms. That’s bad news for soil microbes, according to a global study co-authored by researchers at Northern Arizona University.
Planetary scientists intend to use a new type of drill to look for signs of life far beneath the surface of Mars. But before the drill can be used in space, engineers must first try it out in the most similar environments Earth can provide.
A new report said state funding of Arizona public schools will still be $863 million below what it was prior to the recession, even if voters approve taking more money out of the state land trust fund.
As the result of a binational agreement between the United States and Mexico, the Colorado River received a pulse flow of water in spring 2014 that once again connected the river to the Gulf of California.