The trillion-tonne challenge: Think cumulatively, act immediately on infrastructure
In the international climate change negotiations, countries agreed to the global goal of limiting warming above pre-industrial levels to not more than 2 degrees C. According to the IPCC’s Fifth Assessment Report, to maintain a 66% chance of achieving that goal, cumulative anthropogenic CO2 emissions starting from the period 1861-1880 must remain below about 1 trillion tonnes of carbon (3.67 trillion tonnes of CO2). That drops to an even more restrictive budget when non-CO2 greenhouse gases are taken into account.
How are we tracking so far? By 2011, we had already spent half of the trillion tonne budget.
…
The trillion-tonne challenge: Think cumulatively, act immediately on infrastructureRead More »