But there is no official metric for determining when the world has crossed that line into increasingly ... which estimates that current global warming is somewhere between 1.34 degrees and 1. ...

“The big picture is that the global warming clock for emissions reductions ... That doesn’t jump the long-term average over the 1.5-line, but it’s certainly a sign we’re getting close ...

That means if you plotted a graph of global temperatures ... would fall on a straight line. Dr Jarvis told MailOnline: 'This is about separating the measured warming into its "natural" and ...

Many people think the rate of global warming has dramatically accelerated ... Imagine temperature records plotted on a graph – a small change in the slope would require more time to detect ...

Polar sea ice has reached record, and near-record, lows for this time of year, pushing the pace of global warming and alarming ... 1981-2010 median (solid grey line). The dotted line shows Arctic ...