David Freedman

It’s impossible to know exactly what changes artificial intelligence will bring. We asked the experts anyway

The next wave in construction are ultra-sustainable buildings, which hit environmental goals that would have seemed inconceivable just ten years ago

Gaurab Chakrabarti and Sean Hunt of startup Solugen think they've found a carbon-neutral way of making everyday chemicals for households and industries

In 1998, a 10-year-old Robert Kabera was trying to study a high school science textbook by the light of a kerosene lamp in the Kalahari Desert in Botswana. But the strong desert winds kept blowing it out as soon as he lit it. “I didn’t know much about electricity back then,” he recalls. “I just knew that after living with darkness for six years, I had become obsessed with light.“The darkness Kabera is referring to isn’t just literal. A refugee from the Rwandan genocide, his family of six, along…

Skip the junk, cook your own food

A new "plasma igniter" device could potentially replace traditional spark plugs and help cars burn fuel more cleanly and efficiently

It’s changing the nature of work and management in surprising ways and rippling through the economy and much of society.

Satellites that collect solar power and transmit it down to Earth might sound like science-fiction, but researchers are working to make it a reality.

Israel’s 40-mile-long chain of walls and fences at its Gaza border teems with sensors and automated weapons. It is supported by an electronic intelligence network that monitors every phone call, text message and email in the territory. A large, well-trained military stands ready with state-of-the-art weaponry to respond rapidly to threats.These defenses were built upon much the same technology that the U.S. military uses to keep its citizens safe and watch over its interests around the world and…

As a brutal, relentless heat wave back in June sent temperatures in much of the U.S. soaring above 100 degrees day after day for weeks, the need to keep the air conditioners humming in the face of faltering, strained electric grids became a life-threatening struggle. Throughout most of the affected regions, aging nuclear and fossil-fuel power plants, which generate nearly 80 percent of the electricity in the U.S., broke down under the damaging heat and the enormous electric loads. Even Californi…