Artificial leaf as mini-factory for drugs

Using sunlight to make chemical products has long been a dream of chemical engineers. The problem is that the available sunlight generates too little energy to kick off reactions. However, nature is able to do this. Antenna ...

Image: In daylight on Saturn's night side

NASA's Cassini spacecraft looks down at the rings of Saturn from above the planet's nightside. The darkened globe of Saturn is seen here at lower right, along with the shadow it casts across the rings.

Video: What if humans could photosynthesize?

The sun shines a massive amount of energy onto the Earth's surface every day. What if humans could take a cue from plants and use sunlight to make their own food?

Sponge creates steam using ambient sunlight

How do you boil water? Eschewing the traditional kettle and flame, MIT engineers have invented a bubble-wrapped, sponge-like device that soaks up natural sunlight and heats water to boiling temperatures, generating steam ...

Video: The world's most unavoidable carcinogen

When we go outside, we expose ourselves to the most common carcinogen of all: ultraviolet (UV) rays in sunlight. Most of us know we should apply sunscreen to protect our skin, but some of us forget and suffer a flaky, irritated ...

New device could unlock information potential of sunlight

People rely on sunlight for heat, light, and energy every day, but three Penn State researchers believe we're missing a valuable piece of information that sunlight itself could provide—the dynamic directions of incoming ...

High efficient solar water heating achieved with nanoparticles

A research team in Japan discovered through numerical calculations that nanoparticles of transition metal nitrides and carbides absorb sunlight very efficiently, and confirmed experimentally that nitride nanoparticles, when ...

Image: Frosted dunes on Mars

Sand dunes cover much of this terrain, which has large boulders lying on flat areas between the dunes.

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