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.

What if we could peer into a brain and see guilt or innocence? Brain scanning technology is trying to break its way into the courtroom, but can we—and should we—determine criminal fate based on high-tech images of the brain?

What does fear smell like? Love? Can we use scent to control behavior? Do humans really sense pheromones? What if you could diagnose diseases just by smelling them? And exactly how does our brain convert floating organic molecules into chemical signals that our brain processes as odor?

Deep in the oceans, marine biologist Marah Hardt counts coral, sea urchin, and fish and looks for patterns to understand what makes reefs sick or healthy. Create a coral reef …

How does the brain retrieve memories, articulate words, and focus attention? Recent advances have provided a newfound ability to decipher, sharpen, and adjust electrical signals relevant to speech, attention, memory …

The nature of time is an age-old conundrum for physicists, philosophers, biologists and theologians. The Newtonian picture of time—a kind of cosmic clock that ticks off time in a manner that applies identically to everyone and everything—tightly aligns with our experience. But with special and general relativity, Einstein showed the fallacy inherent in experience.