DENVER–How fast can you solve this math problem: (1 + 2) x SqRt(345.6) ÷ 78.9? That question was the point at issue recently in a “Great Math Race” at the Space Sciences Laboratory of the University of Denver. The participants in the Math Race–it was
In 1945, a research chemist named Earl Tupper created a drinking tumbler from polyethylene plastic. By 1947, he had developed a way to make plastic containers whose parts would form a firm and virtually impenetrable seal to air and moisture. More than three decades later,
One fine day in 1970, an architect named Paul Hemphill counted out $200 as a down payment, signed a finance contract covering the remainder of the $1,500 purchase price, and walked out of his dealer’s showroom as the proud owner of a sleek new automatic
The idea occurred to Jack Kilby at the height of summer, when everyone else was on vacation and he had the lab to himself. It was an idea, as events would prove, of literally cosmic dimensions, an idea that would eventually be honored in the
During the first six months of 1978 the American people have reacted to the recently perceived health threat posed by microwave and radio frequency radiation with unprecedented vigor and determination. From one end of the country to the other, individual citizens and citizens’ groups have
