During the Cold War, the United States detonated 67 nuclear bombs on, in and above the Marshall Islands. The U.S. also conducted a dozen biological weapons tests and dumped 130 tons of irradiated soil, now vulnerable to rising seas.
Rep. Christopher H. Smith (R-N.J.) believes government scientists experimented with ticks as disease-carrying bioweapons between the 1950s and the 1970s. Lyme disease wasn't discovered until the 1980s.
