Ellen Johnson Sirleaf became the 24th president of Liberia in 2006. She won the 2005 elections and was re-elected in 2011. She, with Leymah Gbowee of Liberia and Tawakel Karman of Yemen, received the 2011 Nobel Peace Prize for their nonviolent work to help women. Educated in the United States, Sirleaf is the first elected female head of state of an African country.
New Horizons was launched in 2006 to fly by Pluto and its moons. The unmanned spacecraft flew closest to Pluto on July 14, 2015. The craft will also study Pluto’s five moons: Charon, Nix, Hydra, Styx, and Kerberos. After its work around Pluto is done, it may investigate the Kuiper Belt. Children could learn a great deal more at: https://www.nasa.gov/mission_pages/newhorizons/main/index.html
Stardust was launched by NASA in 1999. Scientists sent it into outer space to collect samples from comets. So how did Stardust collect those samples? It contained plates of aerogel, a type of sticky stuff that attracted and kept the comet materials. It traveled three billion miles before returning to earth January 15, 2006, with samples it took from comet Wild 2. Children can have a great time exploring the Stardust NASA site for kids at: Stardust
Twitter was launched in 2006. Based in San Francisco, the social networking service has more than 500 million users.