Global warming: Leading voices debate the issue

Tomorrow, international experts will deliver their verdict on the state of climate change and are expected to say they are 95% percent certain it is happening.

ITV News' Science Editor Lawrence McGinty gathered leading leading voices in the global warming debate at London's Thames barrier to discuss the issue.

Read: UN scientists '95% sure humans responsible for climate change'


Climate change '95% man-made'

Scientists have said they are more certain than ever that humans are responsible for the majority of climate change, according to a major report on the issue. But the trend in the average global temperature has declined since 1998.