Time allows us to live in the moment, reflect on the past, plan for the future. It’s our most familiar, precious, yet mysterious commodity.

Making sure the parachute deploys exactly on time and lands rovers safely on Mars is in the hands of NASA engineer Michael Meacham. Check out the experiments he conducts on …

Nearly every culture throughout history has used chemicals that alter consciousness for spiritual exploration. In the 20th century these drugs caught the attention of scientists. Psychedelics, as they were named, …

Stephen Wolfram joins Brian Greene to explore the computational basis of space, time, general relativity, quantum mechanics, and reality itself. This program is part of the Big Ideas series, supported …

Ecologist and explorer Mark Moffett has trekked across the globe to document new animal species and behaviors. Just like the creatures he studies, Mark can be found crawling in the …

The mechanism of collapsing stars falls short of explaining the existence of supermassive black holes—giants that weigh millions or even billions of times the mass of the Sun. Astrophysicist Priya …