nature « How Come?

How do the body’s own electric currents work?

How do the body’s own electric currents work? asks a reader.

In “I Sing the Body Electric,” a story by Ray Bradbury, an “electric grandmother” arrives to take care of a family of motherless children. This “grandmother” was a robot, but human grandmothers–and children–are electric, too. In fact, every body is electric. Just as the [...]

Why do a few big ice cubes seem to melt more slowly than many smaller cubes?

Why do a few big ice cubes seem to melt more slowly than many smaller cubes? asks a reader.

If the ice in your drive-through drink disappears on the short trip home, don’t blame the kid who filled your cup. Some of that crushed ice had vanished before your drink even settled into the cup [...]

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How do the body’s own electric currents work?

Why do a few big ice cubes seem to melt more slowly than many smaller cubes?