Humans accidentally created protective bubble around earth

A pair of NASA space probes have detected an artificial bubble around Earth that forms when radio communications from the ground interact with high-energy radiation particles in space, the agency announced. 

The bubble forms a protective barrier around Earth, shielding from potentially dangerous space weather, like solar flares and other ejections from the sun.

Communicating with submarines near the surface of the ocean, humans use a type of radio communication known as very low-frequency waves, or VLF. Stretching all the way out into Earth’s atmosphere and beyond, the waves affect the movement of the radiation particles bouncing around in the region.  theatlantic.com