A combination picture shows the Taipei 101 building before and during Earth Hour in Taipei

A combination picture shows the Taipei 101 building before (top) and during Earth Hour in Taipei March 28, 2015. Earth Hour, when everyone around the world is asked to turn off lights for an hour from 8.30 p.m. local time, is meant as a show of support for tougher action to confront climate change. REUTERS/Pichi Chuang