
By BY RONI CARYN RABIN from NYT Health https://ift.tt/mKOSk4M

Customers who bought a bestselling mattress sold on Amazon and at retailers nationwide are suing the manufacturer over claims that fiberglass fibers in the product have damaged their health.
From word games to workout challenges to staying sober, tracking a streak has never been easier. How can we leverage that motivational power to keep from being totally derailed when a positive streak, inevitably, ends?

With some doppelgangers, there might be more to the idea than meets the eye. A team of Spanish scientists studied pairs of unrelated look-alikes and found that they not only bear a striking resemblance to each other, but also share significant parts of their DNA.