Climate change talks lead to heightened pledge to cut emissions

EU, Canada, New Zealand and developing countries to keep global warming below 1.5C

The EU and scores of developing countries have pledged to toughen their existing commitments to reduce greenhouse gas emissions to enable the world to stay within a 1.5C rise in global warming.

The promise, which follows increasingly dire scientific warnings, was the most positive message yet to come from the ongoing talks in Poland.