From the AP story on CTV.ca:

UN-sponsored scientists who warned of the dangers of a warming Earth will issue a new study next month describing how to avert the worst.

They say that everyone must embrace technologies ranging from nuclear power to manure control. A draft copy of the panel's report says that under a best-case scenario, the global economy might lose as little as three percentage points of growth by 2030.

That is if technologies to reduce greenhouse-gas emissions are used.

But the draft report, obtained by The Associated Press, says it won't be easy to achieve.

One of the report's authors, British researcher Rachel Warren, says: "Governments, businesses and individuals all need to be pulling in the same direction."

Those interested in how to get GHG emissions down should read George Monbiot's book Heat: How to stop the planet from burning.

Interesting that the draft suggests the cost will be higher than the Stern Report's estimate that limiting climate change would cost one per cent of global domestic product annually, but doing nothing would cost the world about five to 20 per cent of GDP annually.

Now, in the April 6 IPCC report on climate impacts, some scientists complained that certain countries tried to have the potential impacts lowballed for political reasons (IPCC reports are consensus documents, so every country must sign on).

I wonder if in this new segment expected May 4 that the costs of acting will be boosted for political reasons, but I need to see more details on the three per cent figure, such as whether that's an annual loss.

A key point will be whether the report puts a cost on inaction.