Science can be both a curse and a blessing.
The automobile gave us convenience, and air pollution. The atomic bomb ended World War II, but spawned the arms race. Medicines can mend lives, but a few have wrought unintended, devastating consequences. Henry W. Kendall co-founded the Union of Concerned Scientists, which strives to improve humanity's stewardship of Earth. A lot, according to Henry W. Kendall, who died last week at the age of 72 while on an underwater filming expedition in Florida.