Portrait of the Austrian biologist and underwater explorer who pioneered our understanding of the oceans

Hotter than ever, more and more tropical fish, the ecosystem on the brink of collapse: what can be done? Silvia is looking for solutions.

On board the FS Meteor a team of German researchers spend five weeks at sea studying the unknown depths of the Atllantic Ocean.

The vast capital of Indonesia, home to 31 million people is sinkingand could be entirely underwater by 2050.

Bangladesh is on the frontline of climate change, a low-lying nation affected by both coastal and river flooding. Predictions for 2050 are alarming: Two thirds of the country could be underwater, making refugees of 40 million people.