OOPS!!! Because there is none. They don't know why but humans are to blame when it happens. What bullsh*t...

Why HAS global warming slowed? Scientists admit they don't know why - but are '95% sure' humans are to blame for climate change

An intergovernmental study claims scientists are 95 per cent sure that humans are to blame for climate change
Scientists believe volcanic ash and more heat being absorbed by oceans could explain why global warming seems to have decelerated in recent times
Governments will use the final report to work out how to invest in renewable energy and protect coastal regions from flooding

By Sarah Griffiths

Scientists are struggling to explain why global warming seems to have slowed down in the last decade in a leaked draft of the UN's next big report on climate change.

The intergovernmental study claims scientists are 95 per cent sure that humans are to blame for climate change, but presently they have not come up with a unified reason for why global surface temperatures have not risen as predicted in the past 15 years.

According to the unpublished draft document, scientists believe volcanic ash, less heat from the sun and more heat being absorbed by oceans could explain the mystery...

Read more: http://www.dailymail.co.uk/sciencetech/article-2398753/Why-HAS-global-warming-slowed-Scientists-admit-dont-know-why.html#ixzz2cctEIr2d