The fuel transfer from one aircraft to another during flight is a sensitive matter, because a collision in the air would be fatal. “World wonder” shows the tanker aircraft A310 MRTT of the German Federal air force. Also: The long journey of a Tropical fruit – like the banana to Germany? The mystery of the mummy – as researchers using a 3D method, the origin of preserved bodies get to the bottom. And: How pencils are produced?

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