World renowned neurophysiologist and computational neuroscientist Christof Koch joins Brian Greene to discuss how decades of experimental and theoretical investigation have shaped his understanding of consciousness and the brain — …

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.

When no one is looking, a particle has near limitless potential: it can be nearly anywhere. But measure it, and the particle snaps to one position. How do subatomic objects shed their quantum weirdness?

See how engineer and art historian Maurizio Seracini uses his pioneering multispectral imaging techniques and other tools to uncover the long-hidden stories behind masterpiece paintings. Episode filmed live at the …

What happens when a black hole a billion times more massive than our sun powers a star-like object? It’s a quasar of a question. These massive and extremely remote celestial …

Is the human brain an elaborate organic computer? Since the time of the earliest electronic computers, some have imagined that with sufficiently robust memory, processing speed, and programming, a functioning human brain can be replicated in silicon.