British adventure photographer captures extreme underground environments around the world

Dreamy images of Finnish landscapes

High-speed images of sand suspended in mid-air

What we can learn from the coldest century on record

A wandering retiree from Bangkok captures landscapes at their most awe-inspiring

An H-shaped home near Perth, Australia built in harmony with its setting

Haunting photos of country landscapes shot on the fringes of Athens

Under a microscope, crystallized alcohol becomes abstract art