Millions of people are wearing masks these days to protect themselves and others. And researchers in Australia have found a way to reuse those single-use, disposable masks to make new roads. Plus: it's National Pizza Day, so here's a very geometry-heavy way to slice up a pizza and still make it equal for two eaters.
Obviously one large pizza gets you more than one medium or one small, but what if you’re offered one of those deals where you could get two mediums for a special price? A bold group of pizza researchers studied how you can get the most pizza for your money. Plus: meet the Cocoa Press, the 3D printer for chocolate the world has always needed, even if we didn't realize we needed it.