Irreversible climate change due to carbon dioxide emissions

The severity of damaging human-induced climate change depends not only on the magnitude of the change but also on the potential for irreversibility. 

Susan Solomon.

This paper shows that the climate change that takes place due to increases in carbon dioxide concentration is largely irreversible for 1,000 years after emissions stop. Following cessation of emissions, removal of atmospheric carbon dioxide decreases radiative forcing, but is largely compensated by slower loss of heat to the ocean, so that atmospheric temperatures do not drop significantly for at least 1,000 years.

Read the 2009 paper by Susan Solomon - “Irreversible climate change due to carbon dioxide emissions.”

Divided by drought

What do you do when your city is running out of water? The answer, at least in one of the world’s most unequal countries, depends on how much money you have.

Within the next few months, Cape Town’s taps could run dry, the result of a protracted drought and a government failure to provide an alternative water source to this city of 4 million. Now, residents are scrambling to find their own private solutions.

For the wealthy, that means hiring companies to dig boreholes and wells. It means buying truckloads of bottled water, even at inflated prices. It means ordering desalination machines to make groundwater drinkable — or safe enough to fill a swimming pool.

For the poor, it means waiting to see what the government comes up with, and contemplating whether you can afford to cut back on food to be able to buy water.

Read The Washington Post story by Kevin Sieff - “Divided by drought.