Small birds fly at high altitudes towards Africa

A new study from Lund University in Sweden shows that small birds migrating from Scandinavia to Africa in the autumn occasionally fly as high as 4,000 metres above sea level—probably adjusting their flight to take advantage ...

How smart is your city?

The proportion of the world's population that lives in cities is growing quickly. This means that we need to develop strategies for infrastructure, water supply, habitation, and climate adaptation, in all cities around the ...

Bats anticipate optimal weather conditions

Millions of animals fly, swim or walk around the Earth every year. To ensure that they reach their destination, they need to perceive precise changes in environmental conditions and choose the right moment to set off on their ...

What is the polar vortex?

The polar vortex is a large area of low pressure and cold air surrounding both of the Earth's poles. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. The term "vortex" refers to the counter-clockwise ...

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