Analysis of emissions cuts planned by EU and G7 countries reveals that they will take the world less than a third of the way to the agreed safety level.
US scientists re-examine the collection of data which seemed to show global warming slowing since 1998 and say temperatures have continued to rise steadily.
Open letter calls for carbon pricing systems where they do not yet exist at the national or regional levels and creation of an international framework to connect national systems.
New study finds 75 per cent of annual global greenhouse gas emissions covered by national targets. Raises hope for UN Climate Summit in Paris in December this year.