If you have trouble remembering how to graph different mathematical functions, these simple figures with their dancing arms can help. At the very least, they’ll make you think of math every time you ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. Everyone is familiar with the “hockey stick” chart of global warming. It’s called ...

The infamous “hockey stick” graph, which shows the northern hemisphere beginning to rapidly warm around the industrial age, has been backed up by new research. Michael Mann, who helped develop the ...

PHILADELPHIA—Michael Mann is feeling pretty good about science. The climate scientist, author of the “hockey-stick graph” paper that infamously depicted a shocking rise in postindustrial average ...

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 ...