This year, NMNH director Kirk Johnson helped spearhead an effort to add up the collections of the world’s largest museums Jack Tamisiea A small fraction of the more than 50 million specimens housed in ...

Is it possible to count objects you can't see? If you've ever received a boxed gift, or a mysterious package from Amazon, you might have tried to lightly shake the box to try to guess its contents.

Daniel Mansfield does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...