Peter O'Dowd

Construction is one of the world's dirtiest industries and creates more than 600 million tons of trash in the U.S. every year.

In 1972, a Soviet spacecraft bound for Venus failed to escape Earth’s gravity and got stuck orbiting our planet. Now, 50-odd years later, the spacecraft’s landing capsule is due to plummet back to Earth.

Construction is one of the world's dirtiest industries and creates more than 600 million tons of trash in the U.S. every year.

The Legacy Project is matching college students and older adults together to create meaningful connections through storytelling.

The 1969 Beatles classic "Come Together" has been covered by many artists over the years, for better or worse.

Warmer temperatures, drought and disease are putting stress on native tree species in Minnesota. Some trees are dying, but researchers are finding ways to help others adapt to a warmer climate.

Intel planned to open a massive chip plant in Arizona, and President Obama even visited it and called it "an example of an America that's within our reach." But demand for PCs has slowed, and the company is rethinking its next moves.

For the first time in decades, interest rates for jumbo home loans are lower than rates for a typical mortgage. And because of that, the luxury market is the fastest growing sector of home loans. In Phoenix, sales of homes that cost more than $500,000 are up 64 percent.

On a summer night in Phoenix, city dwellers can watch a line of head lamps inch up Piestewa Peak. The mountain rises sharply more than 1,200 feet above the neighborhoods of Central Phoenix. It's the most popular outdoor trek in the city. But in July and August the sun turns deadly there and hikers wait until it's safely below the horizon to begin their ascent. At the top, the view unfolds like magic every time — a desert city of four million people that glows red, white and orange.

Some of Sen. Jeff Flake's constituents in Arizona are still livid over his recent vote against expanded background checks for gun sales. They say the Republican is ignoring their calls for a public meeting.