Atlantic hurricane season starts today. Experts are forecasting a 75% chance that the 2018 season will be near- or above-normal, thanks in part to a weak El Niño.
This year's list includes a towering tree and a tiny, single-celled protist, as well as a rare great ape and the fossil of an Australian marsupial lion.
A new study suggests our planet got its 1st snowfall about 2.4 billion years ago, after a lot of land rose swiftly from the sea and set off dramatic changes on Earth.
'What we are witnessing is major hydrologic change,' they said. Over 14 years, Earth's wet land areas got wetter. Dry areas got drier. They also reported multiple hot spots resulting from groundwater depletion.