Hansen on why he became an activist: "Our planet is close to climate tipping points" and it is "clear that needed actions will happen only if the public, somehow, becomes forcefully involved." - Top climatologist launches new website with graphs and analy

60-month and 132-month running means of global surface temperature anomaly with a base period 1951-1980.

The nation's leading — and most scientifically prescient — climatologist has a new website, Updating the Climate Science: What Path is the Real World Following? It "will present updated graphs and discussion of key quantities that help provide understanding of how climate change is developing and how effective or ineffective global actions are in affecting climate forcings and future...