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When our human ancestors first walked tall
A 3.2-million-year-old fossil foot bone, discovered in Hadar, Ethiopia, is shedding new light on when our human ancestors first began to walk upright.
February 21, 2011
Tasmanian devils are not quiet, cuddly vegetarians
A closer look at Tasmanian devils, the world's largest carnivorous marsupial. These animals that only exist on the island of Tasmania are protected.
February 20, 2011
Julia Clarke: Penguin ancestors didn’t wear black and white
Scientists discovered the fossilized remains of a species of penguin that lived 36 million years ago - and it turns out their feathers weren't black and white.
February 18, 2011
Aurora alert for northern latitudes Feb. 17-18, 2011
Aurora alert! People at high latitudes, including the northern U.S., might have a good chance to see the aurora - northern lights - the nights of February 17 and 18, 2011.
February 17, 2011
Watch this amazing video of a hummingbird-sized aircraft
The Nano Hummingbird is the world's smallest Unmanned Aerial Vehicle, or UAV. It's an aircraft that looks and flies like a hummingbird.
February 17, 2011
The odd life of an underground orchid
A strange and wonderful orchid in Western Australia lives its entire life cycle underground. Learn more about the odd life of an underground orchid.
February 16, 2011
Introducing the EarthSky intern for 2011
The EarthSky internship is designed to help support excellence in science communication. Read more about the intern for summer 2011.
February 16, 2011
NASA helps airplanes avoid storms, turbulence, delays
Weather is the main culprit in flight delays. NASA's satellites help airplanes avoid storms by producing better forecasts. Read more here.
February 16, 2011
Female squid pheromones trigger fighting among males
A newly-identified pheromone produced by female squid - the first of its kind found in marine creatures - is thought to induce aggression in males.
February 15, 2011
Slow down there, diet soda study
A February 2011 study suggests a link between diet soda and stroke and other vascular events. But the lack of peer review needs to be acknowledged in news stories.
February 13, 2011
