Giant owl butterflies (Caligo eurilochus) are named for the owl-like eye spots on their wings that make predators think twice before attacking.…
A Rhopalonematid jelly (Crossota millsae) feeding with tentacles extended in all directions filmed at a depth of 1,015 meters (3,330 feet) off southwestern Puerto Rico. [📹 NOAA OOER]…
Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago.…
