Why giant human-sized beavers died out 10,000 years ago

Giant beavers the size of black bears once roamed the lakes and wetlands of North America. Fortunately for cottage-goers, these mega-rodents died out at the end of the last ice age.

Reindeer adapt to climate change by eating seaweed

The bodies of Svalbard reindeer are extremely well adapted to their arctic home at 79 degrees N latitude. As the northernmost reindeer population on the planet, they are thick and round, which makes it easier for them to ...

How proteins are assigned to specific transporters

A fundamental cellular mechanism ensures that proteins are transported to the places they are needed in the cells. So-called vesicles are responsible for that transport. Determining their composition has been difficult up ...

New tree ring analysis method may open insights to past climate

Satellite imagery of earth's vegetation, measurements of carbon dioxide in the air and computer models all help scientists understand how climate is affecting carbon dynamics and the world's forests. But these technologies ...

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