Is humankind causing global warming?

The evidence convinced me long ago, but there have still been sceptics, some of them American scientists. But a leading climate change sceptic is now completely persuaded.

In an op-ed piece in the “New York Times”. Professor Richard Muller writes:

“Our results show that the average temperature of the earth’s land has risen by two and a half degrees Fahrenheit over the past 250 years, including an increase of one and a half degrees over the most recent 50 years. Moreover, it appears likely that essentially all of this increase results from the human emission of greenhouse gases.”

What changed his mind?

“My total turnaround, in such a short time, is the result of careful and objective analysis by the Berkeley Earth Surface Temperature project, which I founded with my daughter Elizabeth.”

The team of scientists based at the University of California, Berkeley, gathered and merged a collection of 14.4m land temperature observations from 44,455 sites across the world dating back to 1753. Previous data sets created by Nasa, the US National Oceanic and Atmospheric Administration, and the Met Office and the University of East Anglia’s climate research unit only went back to the mid-1800s and used a fifth as many weather station records.

Time now to stop debating the reality of climate change and to start tackling the human causes- fast.


 




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