Dark energy is cosmology’s biggest mystery—an anti-gravitational force that confounds the conventional laws of physics. It makes up more than two-thirds of the cosmos, but science is still grappling to explain what dark energy actually is.

What if your brain at 77 were as plastic as it was at 7? What if you could learn Mandarin with the ease of a toddler or play Rachmaninoff without …

New Orleans native Lisa P. Jackson is administrator of the Environmental Protection Agency (EPA). She is the first African-American to serve the post. She started her career working for the …

For every cell in your body, there’s another tiny single-celled creature that also calls your body home. Far from being germs we should eradicate, these ancient friends allow us to …

Ninety years after the historic double-slit experiment, the quantum revolution shows no sign of slowing. Join a vibrant conversation with renowned leaders in theoretical physics, quantum computation, and philosophical foundations, …

Astronomer Jill Tarter leads the charge to search for intelligent life on other planets by listening to clues from over 40 radio telescopes. Episode filmed live at the 2010 World …