Global warming should be called global heating, says key scientist

UK Met Office professor tells UN summit Earth's 'energy balance' is changing

"Global heating" is a more accurate term than "global warming" to describe the changes taking place to the world's climate, according to a key scientist at the UK Met Office.

Prof Richard Betts, who leads the climate research arm of Britain's meteorological monitoring organisation, made the comments amid growing evidence that rising temperatures have passed the comfort zone and are now bringing increased threats to humanity.