Humanity just made a weighty decision. On Friday, representatives of more than 60 nations, gathered in Versailles, France, approved a new definition for the kilogram. Since the 19th century, scientists have based their definition of the fundamental unit of mass on a physical object — a shining platinum iridium cylinder stored in a locked vault
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If you really want to teach someone something, starting with a misconception and working backwards is one of the best techniques. A new video from Veritasium does just that. In the episode, host Derek Muller debunks one of the most common misconceptions about science – namely, that science is simply a steady, gradual way of
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