Hari Mogosanu: Astrobiologist says that light pollution presents a real risk

The stars in our night sky are vanishing at an alarming rate. New data published in the journal Science —collected by citizen scientists around the world over more than a decade— shows the night sky is continuing to become less starry. That's largely due to light pollution from urban settlements, street lighting, and cars. Astrobiologist Hari Mogosanu says that a clear sky isn't just a nice-to-have thing. She says too much light and satellites means that we can't see objects travelling towards the Earth. LISTEN ABOVESee omnystudio.com/listener for privacy information.