A week ago, a test crew emerged after living for a year in Mars-like conditions inside a solar-powered dome on the slopes of Hawaii’s Mauna Loa volcano.
For 90 years, science’s favorite explanation for the origin of life has been the “primordial soup”. But recent research adds weight to an alternative idea.
A new study suggests that the first people to reach America travelled via the Pacific coast rather than through a corridor between two giant ice sheets.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.