Alain Robert climbed the Cheung Kong Centre in just 40 minutes
Frenchman Alain Robert, otherwise known as "Spiderman" for his climbing feats, has scaled a Hong Kong skyscraper to highlight the issue of global warming.
Police arrested Mr Robert at the top of the 62-storey Cheung Kong Centre, but he was later released without charge.
He unfurled a banner during his climb, naming a website that claims to be counting down the number of months left to save the planet from global warming.
Mr Robert scales the world's tallest buildings without safety equipment.
At a media briefing before his second Hong Kong ascent in 10 months, Mr Robert said he believed global warming was the most important global issue.
He has used his previous climbs to highlight issues such as homelessness and HIV/Aids prevention.
The Cheung Kong Centre is the flagship building owned by Hong Kong's richest man, Li Ka-shing, and stands 283m (928ft) high. It took Mr Robert just 40 minutes to scale it.
Mr Robert first climbed the building in June 2005.