In mechanical engineering, scientists and developers are constantly looking for new ways to help machines bear their loads. Rolling bearings are one of the most popular and, due to an increase in unusual tech designs, some of the shapes engineers are creating are anything but ordinary. See how this one impossible shape is capable of rolling as smooth as a ball.
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.