When you're warm and cozy inside, it can be natural to wonder if the animals you see outside your window this winter are doing OK. Don't worry – they're doing better out there than you would.
The European Space Agency is exploring what we can learn from animals about long-term deep sleep.
A new study looking at a long-lived lemur species attributes it to their frequent hibernation-like state. But what lessons can humans learn from this?
It's all about mating success.