This insurance company wants to analyze your saliva to predict when you’ll die

The life insurance business is all about betting on how long you’re likely to live. Now, one company is turning to the hot, but still unproven, field of epigenetics to try to make that bet more scientific. GWG Life, which buys life insurance policies from people who don’t want or can’t afford them anymore, last...

This Pi Day, use math to beat your friends at classic toy games

It’s Pi day! So what better way to celebrate than with games that involve the math of circles? On this most circular of days, we present three classic toys — hula hoops, yo-yo’s and Connect Four — and explore their mechanics with mathematicians and physicists. Learn these calculable secrets, and prepare to best your...

How global warming leads to tiny horses and other shrinking mammals

When the Earth gets warmer, mammals start shrinking. That’s the takeaway drawn from a collection of 53.7 million-year-old teeth discovered in Wyoming’s Bighorn Basin, described Wednesday in the journal Science Advances. These dental records depict a new, consistent trend in the fossil record: ancient animals drop in body size in response to rapid global warming,...

This artist brings dinosaurs back to life

Now to our NewsHour Shares, something that caught our eye that might be of interest to you, too. Nothing captures the imaginations of children and adults alike quite like dinosaurs. But, for one artist, a childhood love of prehistoric creatures inspired a unique, and prolific, career. Special correspondent David Biello explains. Julius Csotonyi is a paleoartist. His...

Typing sentences by simply thinking is possible with new technology

For decades, researchers have worked to create a better and more direct connection between a human brain and a computer to improve the lives of people who are paralyzed or have severe limb weakness from diseases like ALS. Those advances have been notable, but now the work is yielding groundbreaking results. Special correspondent Cat Wise has...