Physics is the science of matter, energy, space and time. It looks both inward and outward, from the smallest subatomic particle to the vastness of the universe—and yet it is also intensely practical. Physics begins with the everyday physical world around us—the blue of the sky, the colors of the rainbow, the fall of an apple, the motions of the moon. What's happening here? Why do things work this way?

Polymer coating cools down buildings

Columbia engineers have made white paint whiter -- and cooler -- by removing white pigment and inventing a polymer coating, with nano- to microscale air voids, that acts as a spontaneous air cooler and can be fabricated, dyed and applied like paint

Mechanical adaptations of bee swarms

A team of Harvard University researchers spent months shaking and rattling swarms of thousands of honeybees to better understand how bees collectively collaborate to stabilize structures in the presence of external loads such as wind and rain

Printing with sound

Harvard University researchers have developed a new printing method that uses soundwaves to generate droplets from liquids with an unprecedented range of composition and viscosity. This technique could finally enable the manufacturing of many new biopharmaceuticals, cosmetics, and food and expand the possibilities of optical and conductive materials.