A new study shows that the event that wiped out the dinosaurs caused only a small drop in shark and ray species at the same ...

Their new study shows that Earth’s massive drop in temperature after the dinosaurs went extinct could have been caused by a large drop in calcium levels in the ocean. The study showed that the ...

Saturn and Neptune have been near neighbors for a while. By the last day of January, the two planets are just 1.7° apart, visible in the early-evening hours and setting before midnight. About 90 ...