Study reveals island formation a key driver of penguin speciation

Ever since Darwin first set foot on the Galapagos, evolutionary biologists have long known that the geographic isolation of archipelagos has helped spur the formation of new species. Now, an international research team has found the first compelling evidence that modern penguin diversity is driven by islands, despite spending the majority of their lives at sea.

Huge Cavity in Antarctic Glacier Signals Rapid Decay

A gigantic cavity – two-thirds the area of Manhattan and almost 1,000 feet (300 meters) tall – growing at the bottom of Thwaites Glacier in West Antarctica is one of several disturbing discoveries reported in a new NASA-led study of the disintegrating glacier.