Science academies' strange claim: "the rate and scale of climate change means there is no time for complacency"

The National Academies | News | Science Academies Call for International Action on Climate Change, Global Health

June 10 -- Today the science academies of the G8 countries, as well as China, India, Brazil, Mexico, and South Africa, issued statements urging leaders worldwide to take action on two pressing global challenges. To mitigate and adapt to climate change, nations must begin a transition to being "low-carbon societies," a shift that will require energy-saving changes in all sectors -- from housing to transportation to industry -- and the development of a range of clean energy sources.

So what is the rate of global "warming" these days? If we're going to completely remake the economies of the world based on this rate, shouldn't they at least tell us what it is?