Perched on top of Santorini's sheer cliffs is a world-famous tourist industry worth millions. Underneath is the fizzing risk ...

Vietnam veteran Bob Hoeller gives an emotionally stirring testimony about honoring America through cohesiveness and holding ...

Satellites have captured amazing views views of these craters on Earth. ESA explains. Nördlinger Ries, Ouarkziz Crater, Tenoumer Crater, Gosses Bluff, Siljan Ring, Roter Kamm, Manicouagan Crater, ...