The virus could send us a message: Civilization has become too fast, too dense, too hectic, and too damaging to nature. A deceleration has now begun. CO2 emissions are decreasing due to the economic slowdown, because the world is at a standstill. Empty streets and ports, the air is cleaner over China or Italy and dolphins return to the ports, nature thanks. This is how the European Space Agency (ESA) was able to report the decline in air pollution.