ANTANANARIVO, Madagascar - A self-destructing palm tree that flowers once every 100 years and then dies has been discovered on the Indian Ocean island of Madagascar, botanists said Thursday. The name of the giant palm and its remarkable life cycle will be detailed in a study by Kew Gardens scientists in the Botanical Journal of the Linnean Society published Thursday. "It's spectacular. It does not flower for maybe 100 years and when it's like this it can be mistaken for other types of palm," said Mijoro Rakotoarinivo, who works for the London botanical gardens in Madagascar. "But then a large...