A vast orbital megastructure circles Earth in a vision of planet-scale engineering, as this documentary explores bold sci-fi ...

From the Arctic permafrost to restless volcanoes and gas‑choked lakes, scientists are tracking a series of natural systems ...

The price of Bitcoin has fallen below $70,000 for the first time since President Trump won the election in November 2024. Markets are nervous after wild swings in metals prices and a sell-off of ...

WASHINGTON — Earth's average temperature last year hovered among one of the three hottest on record, while the past three ...