Humpback whales migrate into the Southern Ocean every spring, attracted by the abundance of krill. The individual populations have clearly defined routes and feeding areas. This makes them ideal indicator species for pollutant monitoring in remote regions. Picture:...
The tusks of narwhal bulls are imposing tools with their length of up to 3 meters. For a long time it was not clear what they were for. Today we know that they are not only a dominance feature but also a sensory organ in the darkness of the Arctic Ocean. The teeth are...
Mercury North Pole with yellow marked water ice deposits. (Photo: NASA/ MESSENGER) It seems almost paradoxical: there is water ice on Mercury, which is heated by the nearby sun. This ice remains in the deep permanent shadow of some polar craters. Until now, meteorite...
