Life'Ultrasonic' insect evolved tiny mammal-like ears Some South American katydids seem to have evolved super-sensitive ears on their legs which may help them tell potential mates from foes ¿ìè¶ÌÊÓÆµ
EarthTropical plankton exodus by 2100 One-third of phytoplankton species could be driven out of warming tropics by the end of the century, transforming ecosystems and threatening fisheries ¿ìè¶ÌÊÓÆµ