There is no bee crisis

Biodiversity - the species we share our planet with - is under pressure. Post-2015 Consensus research finds that a global target to prevent the loss of coral reefs will gives at least $24 of environmental benefits per dollar spent. Likewise, reducing the current loss of forests by half would likely do about $10 of good for each dollar spent. However, increasing protected areas, because it is very costly but only somewhat helpful, is likely to do less than $1 of good per dollar spent.

In Wall Street Journal, Matt Ridley asks how rich countries can best help poor ones and identifies five goals with great bang for the buck based on the output from Post-2015 Consensus so far.

Leaders are implementing superficially attractive but terribly inefficient policies - not least on climate change