Ancient humans built a bridge inside a cave on Mallorca nearly 6,000 years ago
Turkmenistan’s mysterious, flaming ‘Gates of Hell’
Schools in Pakistan's Karachi closed as rare August cyclone builds up
An upstate New York nonprofit is reclaiming a centuries-old cemetery for people who were enslaved
Boeing's 1st crewed Starliner to return to Earth without astronauts on Sept. 6
Rocket scientists build robot probes to gauge melting beneath Antarctica ice shelf
NASA record holder can relate to astronauts stuck in space. He was, too
Two solar probes are helping researchers understand what phenomenon powers the solar wind
