20 years after 9/11: How satellites tracking disasters have changed

Virgin Orbit clears environmental review to launch satellites from Guam

About 506 million years ago, a strange marine creature whose body so resembled a science-fiction spacecraft that it has been dubbed 'the mothership' thrived in tropical seas, menacing prey on the ocean floor in what is now Canada as one of Earth's largest predators to that point in time.

50 years ago, chemical pollutants were linked to odd animal behavior