On the Earth, mostly everything that lives fights Gravity. The bird does, the trees do, the people in the plane do. Even some inanimate things do. Like the blue oxygen and the whisps of white water vapours. That's because there is too much of it around here. But what if there were too little Gravity and we had to fight hard for every bit of it! If you are not afraid of math and want to know, read about Ad Astra Ltd and Early History of Gravity Engineering.

By the Ticino River, Lombardy (North Italy), March 4, 2011