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Ever wonder where the gold in your wedding ring came from? For Valentine's Day, Robert Krulwich tracks the rare element all the way to outer space, where gold is formed in the fiery center of collapsing stars.

Shoppers and retailers alike are at heightened risk of fraud and cyberattacks during the holiday season.

India has ordered 1.3 billion people to stay home to prevent the spread of COVID-19. The lockdown seems to have inadvertently solved, at least temporarily, another public health crisis: air pollution.

There were hopes over the weekend that ISON might have survived its close encounter with the sun. But "with more than a little sadness," the space agency says, "we have to declare the comet lost."

There's plenty of snow for the Olympics. A massive, fully automatic snow-making system operated by a Michigan-based company comes complete with two man-made lakes to draw water from. The company says the snow that's been pumped so far could cover more than 900 football fields.

In his first Memorial Day speech as commander in chief, President Trump paid tribute to those who died in service to the country, and thanked the families who sacrificed their loved ones.

The Tokyo-based company is the subject of reports that a large amount of the virtual currency may be missing. It's another blow to the bitcoin market.

One commenter called it "the Milli Vanilli of fireworks"; another stated, "current mood: disbelieving moon landing."

After surviving the bombing of Hiroshima, Ikuo Hirayama went on to turn the devastation into art, creating through his paintings a "requiem" for those who lost their lives in the war. "I believe that flowers can blossom from anguish and inhumanity," he says.

When the severity of patient sickness and special local expenses are taken into account, some areas marked by big Medicare outlays flip from profligate to average or even frugal, according to the calculations from the federal Centers for Medicare & Medicaid Services.