ScienceDaily (May 21, 2010) — The upper layer of the world's ocean has warmed since 1993, indicating a strong climate change signal, according to a new study. The energy stored is enough to power nearly 500 100-watt light bulbs per each of the roughly 6.7 billion people on the planet.
http://www.sciencedaily.com/releases/2010/05/100521192533.htm