The hummingbird’s super-fast wing beats are among the most energy-intensive movements in the animal kingdom. Still, the birds can fly 4,000 metres above sea level, where there is very little oxygen. Scientists have now figured out how this is possible.
Strange as it may sound, concrete from your old bathroom can help make our environment greener. This is because concrete has a great ability to bind phosphorus, say the scientists behind a new project.
If you still have a firm grip when you start to be elderly you might have a lower risk of dying from cardiovascular disease, respiratory diseases, strokes and various accidents, according to a Norwegian study.