Petteri Taalas, the secretary-general of the World Meteorological Organization (WMO), a specialised UN agency, said he fully supported United Nations climate goals, but he criticised radical green campaigners for forecasting the end of the world. Professor Sir David King , a former UK chief executive , has said that he is scared by the possibility of extreme weather events linked to climate change that are happening sooner than expected . King was partly responding to comments by Petteri Taalas , secretary - general of the World Meteorological Organisation , who criticised environmental campaigners for frightening people by the language they used in relation to climate change . Professor King called for the UK to bring its climate targets forward by a decade , and said that it was " appropriate to be scared " .
Professor Sir David King , a former UK chief executive , has said that he is scared by the possibility of extreme weather events linked to climate change that are happening sooner than expected . King was partly responding to comments by Petteri Taalas , secretary - general of the World Meteorological Organisation , who criticised environmental campaigners for frightening people by the language they used in relation to climate change . Professor King called for the UK to bring its climate targets forward by a decade , and said that it was " appropriate to be scared " .