NASAs Opportunity Mars rover, which landed on the red planet nearly eight years ago, has discovered a mineral vein that was almost certainly deposited by water billions of years ago.
The nation's Storm Prediction Center in Norman, Okla., reports that tornadoes this year have already claimed more lives than all of last year, possibly making this the deadliest tornado outbreak since the 1974.
If climate change leads to ice collecting in one general area in the Arctic Ocean, it might be enough to provide a last 'refuge' for many Arctic inhabitants, including polar bears.
Voyager 1 reaching edge of the solar system, a region where the sun's influence wanes and the speed of the solar wind's outflow is zero, scientists report. Latest zone for Voyager 1: heliopause.
Voyager 1: Since 2004, the Voyager 1 probe has been exploring a region of space where solar wind slows abruptly and crashes into the thin gas between stars.
Scientists have found a hydrothermal vent community three miles beneath the sea near the Cayman Islands. Other vents have led to the discovery of new and exotic creatures.
NASA scientists were surprised to find shrimp and jellyfish below the ice in Antarctica.
NASA's Interstellar Boundary Explorer (IBEX) spacecraft recently detected a mysterious ribbon of particles at the edge of the solar system. Scientists now say it may have been formed by atoms reflected back into the solar system by the Milky Way's magnetic field.