Neil deGrasse Tyson Explains Measurements

Did you know there are certain measurements that will never be completely accurate? Neil deGrasse Tyson and comic co-host Chuck Nice dive into the minutiae of measurements in this original StarTalk video. Neil tells us why, for certain things, we will never be able to get their exact measurements. Find out about the kilogram and its recent change. We investigate the process of measuring the English coastline. And, you'll hear about the atomic clock – and Avocado's Number. (We know... just watch!)