The bigger the brain, the more intelligent a mammalian species is. Developing a large brain, though, requires a huge energy input.

The mutual dependencies of many plant species and their pollinators mean that the negative effects of climate change are exacerbated.

Bilingual children adapt to the needs of their communication partners better than monolingual children. According to researchers at the University of Zurich, this is because children growing up bilingually have to manage challenging communication situations more often and deal with the differing communication styles of their parents.

Chimpanzees have a mainly vegetarian diet, but do occasionally eat meat. Researchers at the University of Zurich have now shown for the first time that chimpanzees also eat crabs.

Teenage girls with problematic social behavior display reduced brain activity and weaker connectivity between the brain regions implicated in emotion regulation.

Most of the knowledge that indigenous communities in South America have about plants is not written down.