From Wikipedia's newest articles:

...that the Milky Way's galactic halo contains many globular clusters?
...that in 1960 the American Ballet Theatre became the first American ballet company to dance in the Soviet Union?
...that during the Great Depression confidence man Oscar Hartzell defrauded thousands of people with false promises of access to the estate of Sir Francis Drake?
...that the Thor, Baldur and Vidar are the best-known sons of Odin but that Snorri Sturluson names at least five others?