Earth & Climate

Brown & polar bears: on the trail of species development

Polar bears carry the genetic heritage of hybridizations with their southern relatives. © Øystein Wiig Researchers have gained new insights into the intertwined evolutionary...

Your guppie is probably a cannibal – but not by nature

We all know the stories of guppies that mysteriously disappeared from the fishbowl. But anyone who thinks that such mysterious disappearances also...

Photo worth seeing: Cave diving under the big city

Not only is the city of Huntsville, Alabama, a center for high-tech and rocket-making, beneath its urban terrain lies a cave with unique residents. Below...

Movement of pinecones decoded

Pine cones open and close with humidity. © raclro / iStock In order to only release their valuable seeds under suitable conditions, pine cones...

After a bad night, a mosquito only wants one thing: sleep

Apparently you're not the only one who needs a good night's sleep to function properly the next day. If you haven't slept at night,...

The Alps are getting greener (and that’s bad news)

Vegetation above the treeline has increased significantly in most of the European mountain ranges. On the other hand, unique Alpine plants are...

Missing bearded vulture Wally is dead

Bearded Vulture Lady Wally before her death. © Markus Leitner The bearded vultures, which were once hunted to extinction, are to be reintroduced to...

Looking for CO2 sinks

Forests, like the Brazilian rainforest shown here, are important CO2 sinks. © FG Trade/ iStock The preservation and reforestation of forests is considered an...

American researchers develop a robot smaller than a flea

The remote-controlled robot is only half a millimeter in size and could possibly be used during surgical procedures in the future. Engineers have developed...

Advance of the trees swallow arctic tundra

Solitary trees in the Siberian tundra. © Stefan Kruse Global warming is threatening ecosystems and vegetation zones around the world. But in the...

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