Crystals from the walls of a government-run nuclear waste facility contain 253-million-year-old cellulose and possibly ancient DNA, scientists announced.
A new technique that looks at chemical clues in seawater suggests that the meteorite that wiped out the dinosaurs 65 million years ago was a mere 2.5 to 3.7 miles (4 to 6 kilometers) across.
Warming may cause a feedback loop by decreasing plant growth that causes reflective clouds to form, according to scientists studying the age of dinosaurs.
A system of underwater listening posts off the New England coast detects whale sounds and then automatically alerts ships to slow down to avoid killing the critically endangered animals.
Last year's magnitude 8.1 temblor crossed a fault between two tectonic plates that should have stopped it from becoming that powerful, a study of local reefs reveals.