Physical conditions or diseases that can cause knee pain: 1  osteoarthritis: pain, inflammation, and joint destruction caused by degeneration and deterioration of the joint. 2  tendinitis: pain in the front of the knee that is made worse when climbing, taking stairs, or walking up an incline.
Ages Of US Presidents. John F. Kennedy is the youngest-ever elected president, aged 43. However, Theodore Roosevelt is the youngest person to ever become president. He was 42 when he succeeded to the presidency, following the assassination of McKinley. Ronald Reagan is the oldest person ever to be elected president. He was 69.
Kennedy was the youngest man elected President; he was the youngest to die. Of Irish descent, he was born in Brookline, Massachusetts, on May 29, 1917. Graduating from Harvard in 1940, he entered the Navy.n 1956 Kennedy almost gained the Democratic nomination for Vice President, and four years later was a first-ballot nominee for President. Millions watched his television debates with the Republican candidate, Richard M. Nixon.