It happens to everyone when you least expect it—a quick swig of hot chocolate after coming in from the cold and ouch! Your teeth react to the temperature change as if you had been chewing on tin foil.

It's been a mystery: how can our teeth withstand such an enormous amount of pressure, over many years, when tooth enamel is only about as strong as glass? A new study by Prof. Herzl Chai of Tel Aviv ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have grown a tooth in a lab, marking a significant step ...