Astronomers looking for exoplanets that support life have eagerly anticipated improved analyses of their atmospheres. But observations of Saturn's moon Titan suggest haze and dust could pose a problem.
A new estimate finds extinction rates to be 10 to 100 times faster than previous estimates. But those involved in the analysis take hope in the sophisticated, public databases of species that have emerged in recent years.
Pumping groundwater from beneath the San Joaquin Valley has lifted billions of tons of weight off the Earth's crust there, potentially easing stresses that keep the San Andreas from slipping, a study suggests.
The 2014 US National Climate Assessment takes stock of human-triggered climate change thus far – and looks ahead to what may be coming later this century. Effects vary widely region to region. Check out what the report says about yours.
Climate change is already affecting all regions of the US and their economies, states a report prepared by the Obama administration for Congress. Effects will intensify absent more vigorous efforts to cut greenhouse gases, it adds.