The experimental successes of quantum mechanics are astounding, yet the theory still has towering mysteries regarding the essence of quantum reality. Philosopher David Albert joins Brian Greene to explore the …

In his research, U.K. Astronomer Royal Martin Rees has tackled topics as varied as the Big Bang, quasars, and more far-out ideas like the search for dark matter and 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 …

A self-driving car has a split second to decide whether to turn into oncoming traffic or hit a child who has lost control of her bicycle. An autonomous drone needs to decide whether to risk the lives of busload of civilians or lose a long-sought terrorist. How does a machine make an ethical decision?

By 2050, one of every four people on Earth will go hungry unless food production more than doubles. Science-based agriculture has proposed unconventional new tools—earthworms, bacteria, and even genes from sunny daffodils—to meet this towering challenge. But will such innovative ideas be enough?

Visual illusions, from magic tricks to images that have sparked internet feuds, are providing scientists with evolving insight into the complex act of seeing. Illusions play with the way our …