Noise and light pollution can change which birds visit our backyards

Noise and Light Pollution Changes Which Species of Birds Visit Our Backyards

What Causes The Northern Lights? Scientists Finally Know For Sure. The natural light show starts when disturbances on the sun pull on Earth's magnetic field. That creates cosmic undulations known as Alfvén waves that launch high-speed electrons into Earth's atmosphere where they create the aurora.

Discovery of a Dying Supermassive Black Hole by Accident – Via a 3,000-Year-Long Light Echo