Just cut it in half ...

Halving carbon dioxide emissions by half by 2050 could stabilize global warming.

To contain global warming, and its risks and consequences, warming compared to pre-industrial times (pre 1900) should not exceed two degrees Celsius. Although, according to the reports of the Intergovernmental Panel on Climate Change (IPCC), there is no specific temperature threshold for dangerous climate changes, and the negative effects are gradually increasing, over one hundred countries have adopted this “2°C target”. Scientists have used a new probability model to calculate how much CO2 our atmosphere tolerates under these target specifications. This and another study, recently published in Nature, produced similar results: From 2000 to 2050, a maximum of 1000 billion tonnes of CO2 may be emitted into the atmosphere. Roughly speaking, today, around one third of this wad has already been shot.

One third of this wad has already been shot? WTF kind of reporting is this?