A group of scientists have refined the famous 'hockey-stick' graph, adding nearly 10,000 years of data onto it, and highlighting the alarming trend in global warming in the past few decades. This new ...

Back in 1999, Penn State University climate scientist Michael Mann released the climate change movement’s most potent symbol: The “hockey stick,” a line graph of global temperature over the last 1,500 ...

Greenhouse gases were the highest on record. Global surface temperature was the highest on record. Average sea surface temperature was the highest on record. Global upper-ocean heat content neared ...

Millions of words have been written about the new report from the Intergovernmental Panel on Climate Change (IPCC). But for me, two key messages stand out – one for its importance, the other for its ...

Pretty hard to argue with that, right? Mostly because that’s a graph and graphs don’t talk. But yeah, the data are pretty compelling too. As Klein points out, 2012 was the ninth-warmest year ever ...

The “hockey stick” graph has been both a linchpin and target in the climate change debate. As a plot of average Northern Hemisphere temperature from two millennia ago to the present, it stays ...

Do you see it? The line graph, in the artwork above? Take another look. Whoa, right? Artist and scientist Jill Pelto combines art with scientific data to raise awareness about climate change. In this ...

Recently, on Twitter and Facebook I noticed graphs of climate change and its impacts being posted. These were often unaccompanied with data sources or links. A lot of misinformation occurs across the ...

The "Hockey Stick" graph, a simple plot representing temperature over time, led to the center of the larger debate on climate change, and skewed the trajectory of at least one researcher, according to ...

The climate scientist behind a renowned global-warming stripe graphic said he’s going to need more colours to represent the warmer world of the future. Professor Ed Hawkins designed the visualisation ...