Big Ideas: August 28, 2019

In this edition: Physicists may have detected a black hole as heavy as 100 suns. Plus, scientists create an artificial memory, raising social and ethical questions about the growing science of memory manipulation. And, researchers propose a space elevator called "Spaceline" that would link the Earth and the Moon.

    Big Ideas: August 28, 2019

    Photo: www.nationalgeographic.com