Many maps of the ocean floor are decades old. The race is on to properly chart them by 2030 – and crowdsourcing could be part of the answer.

New research on the geology of Zealandia is revealing how it formed – and why it sank

Not all violence is fast. Hidden in plain sight across society, there is a kind of harm that happens too slowly to see, says Richard Fisher.

Luis Martinez has written thousands of vivid poems about cities around the world, yet the Cuban bus porter has never left his homeland.

What if major elections, wars and events had turned out differently? Samuel Arbesman explores the detail and delights of maps that plot alternative worlds to our own.