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The Hult Prize goes to a team of student entrepreneurs with an idea that will make the world a better place. Former President Clinton was on hand to announce the winner.

After nearly going bankrupt, chef Tim Ma cut costs by cooking creatively with every last bit of ingredients. Some dishes born of frugality have become favorites at his acclaimed D.C. restaurant.

Scientists weigh in on whether Americans really need to pay for alkalinized, mineralized, or purified water from filters or bottles.

The speech had something for everyone. It had several lines that might have made members of both parties uncomfortable — but mostly Republicans.

The multibillion-dollar "plan of the century" aims to create a network of trade routes, rail lines, ports and highways, linking countries on four continents. Nearly 70 countries have signed on.

A new type of genetically engineered crop is tempting farmers to use a weedkiller illegally. The illicit chemical use has damaged nearby crops and provoked conflict among neighbors.

The privately built border wall in Texas teeters on the banks of the Rio Grande with serious erosion problems. The contractor was awarded more than $2 billion in official wall contracts.

Eight candidates meet the requirements to make the debate stage in September: Joe Biden, Bernie Sanders, Elizabeth Warren, Kamala Harris, Pete Buttigieg, Beto O'Rourke, Cory Booker and Andrew Yang.

Built in 1949 in the Pacific Palisades, the Eames House is considered among the most important postwar residences in the U.S. Now, the family is working to preserve the home for generations to come.

Blacks and Hispanics are exposed to higher levels of air pollution than whites, yet whites consume more of the goods and services that cause it, according to new research.