* Astronomy

Oswald of Worcester's feast day is celebrated on 29 February
http://en.wikipedia.org/wiki/Oswald_of_Worcester

Rare Disease Day is an observance held on the last day of February
http://en.wikipedia.org/wiki/Rare_Disease_Day

The Tokyo Skytree was completed on 29 February 2012, with the tower opening to the public on 22 May 2012
http://en.wikipedia.org/wiki/Tokyo_Skytree

The European Launcher Development Organisation (ELDO) was founded on 29 February 1964.
http://en.wikipedia.org/wiki/European_Launcher_Development_Organisation

Jack Robert Lousma (born February 29, 1936), (Col, USMC, Ret.), is an American aeronautical engineer
http://en.wikipedia.org/wiki/Jack_R._Lousma

John Philip Holland (29 February 1840 - 12 August 1914) was an Irish engineer who developed the first submarine to be formally commissioned by the U.S. Navy
http://en.wikipedia.org/wiki/John_Philip_Holland

Gene Howard Golub (February 29, 1932 - November 16, 2007) was one of the preeminent numerical analysts of his generation.
http://en.wikipedia.org/wiki/Gene_H._Golub

Ene Ergma (born 29 February 1944 in Rakvere) is an Estonian politician and scientist.
http://en.wikipedia.org/wiki/Ene_Ergma

Lewis A. Swift (February 29, 1820 - January 5, 1913) was an American astronomer.
http://en.wikipedia.org/wiki/Lewis_A._Swift