The only evening planet for July is Mars, faint red in the west at dusk, and getting lost in the Sun’s glare by August. High ...

A study published Monday in the Proceedings of the National Academy of Sciences found that increases in salinity in seawater near the surface could help explain some of the decrease in Antarctic sea ...

Expanding oil and gas development in the National Petroleum Reserve-Alaska could threaten these birds by disrupting their ...

Dion George says he is taking a big, bold step — putting the wild, frigid seventh continent at the heart of the country’s ...

Mercury moves super fast around the Sun, finishing its year in just 88 Earth days. The planet has crazy temperature swings, ...