Isabella Tramontin recalls as a young child peering up at the tall water sphere in Union Township while her family was stuck in bumper-to-bumper traffic on the Garden State Parkway. The 21-year ...

Imagine the Earth in your mind’s eye. Now round up all the water on the planet into a sphere (we’re talking oceans, icecaps, atmosphere, everything — even the water bound up in you and me).

water in plants and animals; all of it---rolled into a sphere. That sphere was only 860 miles in diameter, fitting comfortably between Salt Lake City and Topeka, Kansas, on a map. It was striking, ...

In more technical language, think of the coconut as a sphere and the hairs as vectors. A vector, often depicted as an arrow, is just something with a magnitude (or length) and a direction.