Climate Home: Countries agreed last year to limit global warming to 2C this century and "pursue efforts" to hold it to 1.5C to avoid dangerous climate change.
Scientists have come up with a range of estimates for the cap on greenhouse gas pollution needed to have a likely chance of avoiding that threshold. It`s known as the "carbon budget".
A review of the evidence on Wednesday published in journal Nature Climate Change recommended dismissing the more generous allowances.
From 2015 onwards, there is only...