A costing for a giant sunshade in space shows that there are probably better ways to spend the money.

The leading economist Nicholas Stern has just handed us, in advance, the bill for the impacts of climate change: close to $4 trillion by the end of this century1.

And with perfect timing, astronomer Roger Angel of the University of Arizona has delivered the equivalent of a builder’s estimate for patching up the problem using a cosmic sunshade2. It will set us back by… well, let’s make it a nice round figure of $4 trillion by the end of the century.

Read the column here.

A costing for a giant sunshade in space shows that there are probably better ways to spend the money.

The leading economist Nicholas Stern has just handed us, in advance, the bill for the impacts of climate change: close to $4 trillion by the end of this century1.

And with perfect timing, astronomer Roger Angel of the University of Arizona has delivered the equivalent of a builder’s estimate for patching up the problem using a cosmic sunshade2. It will set us back by… well, let’s make it a nice round figure of $4 trillion by the end of the century.

Read the column here.