Hourly Weather - Tamanrasset, Algeria

Researchers estimate that more than 600 million migratory birds die because of light pollution every year, mostly due to collisions with skyscrapers. (Patricia Leonard/Cornell Lab of Ornithology) At a Glance More than 600 million migrating birds fly into skyscrapers and die every year.Researchers have named the top three deadliest cities for migrating birds.Light pollution attracts birds to cities and tall buildings. The hundreds of skyscrapers in America’s largest cities are dangerous beacons for billions of migratory birds, either stopping them...