Behind the success of MOSAiC is a perfectly coordinated planning team. Curious polar bears were the least of the problems during the expedition - it was the Corona pandemic that caused the planners sleepless nights.

He experienced the polar night, had to reschedule an entire expedition and was frozen to the end of the world in the middle of the Corona pandemic. Why Markus Rex has little fear and why he is now calling for decisions on climate protection.

The Potsdam geotechnologist Hannes Hofmann ensures that more electricity can be generated from geothermal boreholes in Iceland. At the same time, he is keeping in mind that the boreholes do not pose any risk of earthquakes.

Climate change also poses major challenges for agriculture. In an interview, biologist Ulrich Schurr reveals what needs to be done, what role artificial intelligence plays in this, and how a new research cooperation with researchers from Israel could also help German farmers.

It was the grand finale of the MOSAiC expedition: After one year the research vessel "Polarstern" returned to Bremerhaven. About 500 people from 20 nations were on board in several stages. Frozen in a floe, they drifted around the North Pole.

Scientists from 20 nations have frozen themselves in the ice of the Arctic Ocean and drifted with the ice masses over the sea for a year. On the MOSAiC expedition, they explored the North Pole region from every conceivable perspective at every time of year - and brought back insights that no one had ever gained before.

He was the expedition leader of the midwinter king stage of the MOSAiC expedition and was able to gain some of the darkness even for three months: Geophysicist Christian Haas loves to study the sea ice in the farthest corners of the world - but he loves the mountains just as much. As a mountaineer he has conquered almost all the major peaks of the Alps.

For twelve months, the "Polarstern" traveled through the Arctic Ocean as part of the MOSAiC expedition, and now the scientists are returning home. About 500 people from 20 nations took part in this extraordinary journey. Helmholtz researchers report on their adventurous measurements in the Arctic.

In an interview, Reinhold Messner explains why he is eagerly awaiting the results of the largest Arctic expedition ever, how he experiences climate change in his home country and why he would never fly into space.