Today is Saturday, April 28, the 119th day of 2012. There are 247 days left in the year.
1686 ― First volume of Isaac Newton's ``Principia" published
1770 ― Captain James Cook in Endeavor lands at Botany Bay in Australia
1914 ― W. H. Carrier patents air conditioner
1932 ― Yellow fever vaccine for humans announced
1935 ― Moscow underground opens (81-km long)
1956 ― Last French troop leave Vietnam
1967 ― Muhammad Ali refuses induction into army and stripped of boxing title
1989 ― Argentina, hit by rocketing inflation, runs out of money
1994 ― First multiracial election in South Africa ends (three days)
1995 ― Gas explosion in South Korean subway construction site, 103 die