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How Much Does a Single Cell Weigh? The Brilliant Physics Trick of Weighing Something Less Than a Trillionth of a Gram

How much does life weigh? It sounds like a strange question, but to biologists it makes all the sense in the world. Yeast ...

The 21 grams experiment that tried to weigh a human soul

MacDougall hoped to discover whether a soul had mass with his macabre experiment, and if so, how much. His tests with ...