An unplanned grand experiment is changing Earth.
As people across the globe stay home to stop the spread of the new coronavirus, the air has cleaned up, albeit temporarily. Smog stopped choking New Delhi, one of the most polluted cities in the world, and India’s getting views of sights not visible in decades. Nitrogen dioxide pollution in the northeastern United States is down 30%. Rome air pollution levels from mid-March to mid-April were down 49% from a year ago. Stars seem more visible at night.
People are also noticing animals in places and at times they don’t usually. Coyotes have meandered along downtown Chicago’s Michigan Avenue and near San Francisco’s Golden Gate Bridge. A puma roamed the streets of Santiago, Chile. Goats took over a town in Wales. In India, already daring wildlife has become bolder with hungry monkeys entering homes and opening refrigerators to look for food.
When people stay home, Earth becomes cleaner and wilder.
“It is giving us this quite extraordinary insight into just how much of a mess we humans are making of our beautiful planet,” says conservation scientist Stuart Pimm of Duke University. “This is giving us an opportunity to magically see how much better it can be.”