Looking For a Busy Beaver

Article Abstract:

George Uhing researches capabilities of Turing machines. His findings include a five state machine that prints 1,915 ones out of two million moves in his quest for a busy beaver. Uhing used under $100 worth of equipment to make his computer, which ran for about three weeks to test the possibilities automatically.

Computers, Digital computers, Technology, Computer Systems, Analysis, Computer Design, Uhing, George

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Looking for alternatives

Article Abstract:

The scientific community is considering the use of harmless benchmarking in conducting experiments, after chemist Karen E. Wetterhahn died of mercury poisoning. Wetterhahn accidentally exposed herself to dimethyl mercury which caused her death a year later.

Health aspects, Research, Poisons, Mercury, Mercury (Metal), Toxicology, Experimental

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Looking for heron

Article Abstract:

An amateur naturalist remembers a great blue heron that often visited the salt marsh across his cabin in Vancouver Island. He sought out the bird to observe its behavior and relationship with its environment.

Personal narratives, Appreciation, Herons, Bird watching

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