Kori R. (Bishop) Hill (born 1971)

In 1971, in the year that Kori R. (Bishop) Hill was born, in March, Congress passed the Twenty-sixth Amendment to the United States Constitution, which lowered the voting age to 18 (from 21). It was a response to the criticism that men could fight at 18, but not vote for the policies and politicians who sent them to war. The states quickly ratified the Amendment and it was signed into law on July 1st by President Richard Nixon.

In 1985, in May, a paper published in Nature by three British scientists reported that a huge hole was discovered in the ozone layer over the Antarctic. It was much larger than expected and is due to the use of manmade chemicals.

In 1986, on January 28th, the space shuttle Challenger exploded 73 seconds after launch. All seven crew members died. The cause of the explosion was later found to be a failed O-ring. The O-ring failure was due to the unusually cold conditions at Cape Canaveral.

In 1990, on April 24th, the Hubble telescope was launched into space after long delays due to the Challenger explosion. An optical flaw was found within weeks of launch but was fixed within three years. The discoveries made possible by the Hubble have contributed to scientists' understanding of the universe.

In 1996, on July 5th, the first cloned mammal - "Dolly the Sheep" - was born in Scotland. She had three mothers. Dolly lived to be 6 years old and produced 6 lambs. Since, other sheep have been cloned as well as horses, pigs, deer, and bulls.