12scienceWhy do children in southern Marin County have fewer cavities than children in northern Marin County?Show AnswerLearn MoreShare
6scienceThe first vaccine, developed by the English physician Edward Jenner in 1796, protected people against what disease?Show AnswerLearn MoreShare
10scienceThe hypodermic syringe, a lifesaving devise used by doctors but abused by junkies, was invented at the time of which war?Show AnswerLearn MoreShare
9scienceIn 1943, French underwater explorer Jacques Cousteau helped create an invention designed for underwater breathing, and 60's British rock group Jethro Tull named an album after it. What is it?Show AnswerLearn MoreShare
12scienceWhat word can refer to a soft, creamy European cheese, or to the fundamental units of matter, smaller than an electrons (as surmised by scientists).Show AnswerLearn MoreShare
13scienceWhat is the name of the effect, named after a 19th Century Austrian physicist, which causes the sound of a moving object to change its pitch as it approaches and then passes you?Show AnswerLearn MoreShare
19scienceWhich small, prehistoric flying animal got its name from the Greek words meaning flying finger wing?Show AnswerLearn MoreShare
16scienceIn a dubious achievement in science, 1995 a Swiss biotech lab grafted what on the back of a mouse?Show AnswerLearn MoreShare
2scienceWhat was the name of the controversial herbicide used by the United States during the Vietnam War to defoliate jungles?Show AnswerLearn MoreShare
12scienceAmerica's first nickel, or five cent piece, was first produced in 1866. It consisted of 25% nickel, and 75% what metal?Show AnswerLearn MoreShare
10scienceThis chemical element makes up about 1/4 of the earth's crust; it is the main ingredient of sand, is the main ingredient of glass, is used in the making of computers, and can also be made into synthetic rubber. What is this element?Show AnswerLearn MoreShare
17scienceA deficiency of Vitamin C can cause a disorder characterized by bleeding gums and extreme weakness, called what?Show AnswerLearn MoreShare
9scienceCan you name four materials, considered almost as valuable as gems, and frequently used as jewelry, that come from plants and animals?Show AnswerLearn MoreShare
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