Sunglasses reflect more than the light: a brief history of shades, from Ancient Rome to Hollywood
Sunglasses are important for protection. But over the centuries they have also become fashion accessories and personal ...
The incredible trench that's 11k metres below sea level and is the deepest place on Earth
Deep below the Pacific Ocean lies the Mariana Trench, which is home to the Earth's deepest known point of the seabed, plunging to 10,935 metres below sea level.