July 7, 1855: Physicist Michael Faraday (at right), best known for his breakthroughs in electrical current conductivity, publishes a letter in the Times of London decrying the "filth" of the Thames River.
July 7, 2000: The Associated Press reports that a year after it spilled millions of gallons of oil in Alaska’s Prince William Sound, the Exxon Valdez gets repairs and a name change. According to a company spokesman, the newly named Exxon Mediterranean will haul oil in Europe and the Middle East. The supertanker will get at least two more name changes in subsequent years, before being sold for scrap in March 2012.
July 7, 2007: Madonna, Metallica, the Beastie Boys, the Red Hot Chili Peppers, Sting, and dozens of other performers stage Live Earth concerts in eight locations around the world to call attention to climate change.
Photo: Wikimedia Commons