Proposed a century ago to better explain the mind-bending behavior of the smallest constituents of the universe, quantum theory has implications far beyond the atom. This rich set of laws has applications both practical and extraordinary.

So you thought nobody could know what you’re thinking? Well, you’re right. For now. But fMRI brain research, identifying patterns linked to thoughts, is moving forward at a pace that’s surprising even experts.

The first detection of colliding black holes rocked the scientific world, establishing that gravitational waves are real and that we are able to measure them. More recently, scientists have achieved …

In the future, a woman with a spinal cord injury could make a full recovery; a baby with a weak heart could pump his own blood. How close are we today to the bold promise of bionics—and could this technology be used to improve normal human functions, as well as to repair us?

You exist. You shouldn’t. Stars and galaxies and planets exist. They shouldn’t. The nascent universe contained equal parts matter and antimatter that should have instantly obliterated each other, turning the …

Have you ever spent hours looking for something you just know is there, only to be doubted? In 1987, most astronomers thought there was nothing in the outer solar system, …