Einstein dreamed of a unified theory of nature’s laws. String theory has long promised to deliver it: a mathematically elegant description that some have called a “theory of everything.” Join …

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.

Join Brian Greene and Britain’s Astronomer Royal Martin Rees as they discuss challenges and opportunities swirling around cosmology–the big bang, dark matter, dark energy, and black holes–and the future of …

A universe that continually expands has long been the dominant cosmological framework. But a universe that undergoes cycles of expansion and contraction, perhaps for all time, has recently been analyzed …

Safest Halloween costume, longest-running washing machine, toys that work! Engineer Rachel Rothman and her team of engineers, chemists and researchers make sure these marketing claims, are true as part of …

Leading cosmologist Matias Zaldarriaga, joins Brian Greene to explore the stunning insights — and the remaining mysteries — of modern cosmological thought. This program is part of the Big Ideas …