How do kangaroos breathe while they hop?

If you hop like a kangaroo, you might be able feel the air being pushed out of your lungs. Here's why it happens and why it matters.

Wood-burning stoves - harmful or safe?

Wood-burning stoves are a popular source of heating in many countries. However in recent years there has been much debate about the potential negative health effects associated with wood smoke. A Norwegian researcher has ...

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