By Max Schwarz and Yves Herman DAVOS, Switzerland (Reuters) -Greenpeace activists staged a brief climate change protest just outside the main hall of the World Economic Forum's annual meeting on Thursday,

DAVOS, Switzerland (Reuters) - Greenpeace activists evaded the World Economic Forum's tight security checks on Tuesday, staging a brief climate change protest outside the main hall of the annual meeting in Davos.

Climate activists sprayed green paint over Amazon's base in Davos on Monday and disrupted helicopter landings at the start of the World Economic Forum's annual meeting. Swiss police swarmed to close down both protests as global business and political leaders descended on the mountain resort on the opening day of the meeting,