If exercise feels harder than it should, chronic stress may be working against you. Learn how to regulate your physiology so your body can support your fitness goals.

Does string theory—the controversial “theory of everything” from physics—tell us anything about consciousness and the human ...

Foams are everywhere: soap suds, shaving cream, whipped toppings and food emulsions like mayonnaise. For decades, scientists ...

Researchers have created a self-healing composite that is tougher than materials currently used in aircraft wings, turbine blades and other applications—and can repair itself more than 1,000 times.