Birds are often associated with flight, but not all of them take to the skies. Around 60 species — fewer than 1% of all bird species — are flightless, including ostriches, penguins and kiwis. These birds evolved from flying ancestors but…
Tens of millions of miles beyond Earth, a nuclear-powered, car-sized rover is climbing a Martian mountain.
NASA’s Curiosity rover, while investigating Mars’ past, has snapped over 683,790 pictures as it’s…