University of Zurich

Ground squirrels use the sun to hide food

Ground squirrels use information on the position of the sun when hiding their food and reuse this information to find their food stash again. The position of the sun serves as a reference point for the animals, which live ...

dateSep 12, 2016 in Plants & Animals
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Environmental DNA uncovers biodiversity in rivers

Most natural ecosystems are heavily affected by changes to the human habitat, climate change or invasive species. In order to protect these ecosystems, one needs to know which organisms live in them. Therefore, assessing ...

dateAug 30, 2016 in Ecology
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Why fruit fly sperm are giant

In the animal kingdom, sperm usually are considerably smaller than eggs, which means that males can produce far more of them. Large numbers of tiny sperm can increase the probability of successful fertilization, especially ...

dateMay 25, 2016 in Plants & Animals
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Mice cooperate if they benefit

Four people meet for dinner in a restaurant and split the check four ways. Anyone who ordered more or something more expensive than the others gains an advantage from the situation. Social dilemmas like this one also occur ...

dateMay 12, 2016 in Plants & Animals
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