A French daredevil scaled a 73-story Hong Kong skyscraper barehanded Tuesday, his latest attempt to draw attention to global warming by climbing up the world's tallest buildings. Alain Robert, dubbed the French spider-man, has scaled dozens of tall structures without ropes or harnesses, including the Eiffel Tower in Paris, the Empire State Building in New York and Malaysia's Petronas Towers in Kuala Lumpur. It took Robert about 40 minutes Tuesday to scramble up the downtown Cheung Kong Center -- the flagship building of Hong Kong's richest man, LJ Ka-shing. Upon reaching the top of the 270 meter (885.83 foot) building, Robert waved to a crowd of spectators on the ground below. The 46-year-old said he hoped his climbs could help bring attention to the world's environmental problems. It's the fourth time Robert has mounted a skyscraper in Hong Kong. He scrambled up the city's 45-story Four Seasons hotel last year.
