Flammable vapor caught fire at the Chevron Refinery in Richmond, California.
Six employees were injured in the accident.
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A team of NASA scientists declared that the Martian ALH 84001 meteorite might contain traces of alien life.
World Resources Institute reported that a quarter of the world's population is running out of water.
At just 30 years old, golf professional Tiger Woods won the 50th PGA, making him the youngest person ever to win a PGA.
Portugal and the Dutch Republic signed the Treaty of The Hague.
Mount Tongariro in New Zealand erupted for the first time in 115 years.