These are not exhortations from overwrought extremists, but carefully phrased warnings from some of the world's finest scientists.

These are not exhortations from overwrought extremists, but carefully phrased warnings from some of the world's finest scientists,

This set of recommendations is ecologically responsible, but it's not putting a hair shirt on Seattle.

While this is just a first step, it's an incredibly important first step.

This is an incredibly important step forward.

We've made some heroic efforts, but the Earth as a whole is in worse shape today than 30 years ago. There has been 30 more years of greenhouses gases, species extinctions and population growth.