The Alliance of World Scientists has contributed a paper this week to BioScience, which tries to bring the weight of thousands of scientists behind a fundamental change in the way that humans need to interact with the Earth, invoking a set of “vital signs” which can be constantly monitored to see how we are doing. Effectively it is putting the names of 11,258 scientists from 153 countries behind a single set of climate change ideas. Having read it we’re not sure that the climate change debate has moved forward with this article, and to us the problem needs to be broken down into small chunks to make each step politically achievable. Our own preference – endorse renewable energy – is…