Those are the latest alerts in a new paper led by James Hansen, director of Columbia University’s Climate Science, Awareness and Solutions Program and a former director of NASA’s Goddard Institute for ...

Why does a recent study led by renowned climate scientist James E. Hansen suggest that limiting global temperature rise to ...

and mask the warming effects of greenhouse gases. Climate researcher James Hansen estimates that "global dimming" is cooling our planet by more than a degree Celsius (1.8°F) and fears that as we ...

Reductions in air pollution have helped warm the planet by cutting down on reflective particles in the atmosphere – but researchers still disagree on the size of this effect ...

James Hansen, a well-known climatologist ... it would mean that the cooling effect of air pollution has masked the full impact of greenhouse gas warming. Hansen and his colleagues warn that ...

James Hansen, a well-known climatologist ... it suggests that the cooling effect of air pollution may have been masking the full impact of greenhouse gas warming. Hansen and his colleagues warn ...

James Hansen, a former Nasa scientist now at Columbia University, said the record temperatures of the past two years were the first payment owed on a “Faustian bargain”, where air pollution in effect ...

Led by renowned climatologist James Hansen ... is more sensitive to rising greenhouse gas emissions than previously thought. Compounding the crisis, Hansen and colleagues argued, is a recent ...