For millennia, psychedelic substances have been used as sacraments, medicines, and tools to shift consciousness and expand the mind. Why have these compounds captivated humans for so long and how …

Cosmologist Hiranya Peiris joins Brian Greene to discuss pressing cosmological mysteries spanning dark matter, dark energy, the expansion rate of space, and the possibility of a multiverse.

James Peebles, one of the world’s greatest cosmologists, has profoundly influenced our understanding of dark matter, dark energy, and the big bang, contributions that earned him the 2019 Nobel Prize …