Over the last hundred years or so, buildings have gone through an architectural revolution. Thanks to steel beams and concrete exoskeletons, buildings can reach new heights. But, in 2009, the tallest building in the history of the world opened, and the new tech used to rise into the clouds is truly amazing.
Stop robocalls once and for all
Robocalls are not only annoying, but they scam Americans out of millions every year. Learn Kim's tricks for stopping them for good in this handy guide.