Our landfills are a graveyard for old, plastic toothbrushes. Last year, 495 million nonelectric toothbrushes were purchased in the U.S. They’re not recyclable, which means the vast majority get tossed ...

Everything that uses electricity is getting smart — or eventually will. We've had electric toothbrushes for some time now. But now, those toothbrushes are finally getting smart functionality. One of ...