Exploding Batteries, Missing Teeth & Melted Jeeps

A woman's headphones exploded on a commercial flight this year, an elderly couple's laptop almost destroyed their home, vapor cigarettes have exploded with such violence that one user's teeth were knocked out, hover boards have melted a Jeep yes, melted ha!) and burned others homes. So are our electronics out to destroy humans? Not quite. These problems have all been caused by lithium ion batteries overheating or rupturing inside these devices. So..after all these years why are we now seeing this problem?