Climate challenge: reaching a global accord

The Paris accord signed in December 2015 will come into effect in 2020. It aims to limit global average temperatures.

Klimawandel – ein Dossier von
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A contentious political issue
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Crunching the numbers

Aletsch’s changing environment What’s happening to Europe’s longest glacier?

By , Aletsch

The mighty Aletsch Glacier is melting at an ever-quickening pace and could almost disappear by the end of this century. The shrinking ...

in depth

Soaring with Solar Impulse

Solar Impulse 2 (Si2) was the first aircraft of its kind to circle the globe – flown by two Swiss pilots and making several stops along the way.