Amazing Facts

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Your Accelerated Eyes

December 30, 2003

When a beam of light hits your eye, a chain of events is set off that is really quite amazing. Kendall J. Blumer (Washington University School of Medicine) describes a little of it in the Jan. 1 issue of Nature.1 You don’t have to understand the following description; just be glad you don’t have to […]

Amazing Facts

Life Runs on Waterwheels

December 22, 2003

The cells of every living thing are filled with molecular machines, and one of the most fascinating is a rotary motor called ATP synthase (see April 2002 back issue, opening paragraph). This is a true mechanical/electrical motor, found in every living thing from bacteria to elephants and palm trees. It is really two motors in […]

Amazing Facts

Intracellular Railroad Has Park-and-Ride System

December 4, 2003

Cells are like miniaturized cities, with elaborate transportation systems ferrying their cargo to and fro (see Feb. 25 headline). Just like a city may have railroads, busses, cars and monorails, the cell has multiple kinds of transport motors: dyneins, kinesins, and myosins. Scientists have learned that most of the roadways are like one-way monorails: actin […]

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