evidence: "And time is running out, as the IPCC report clearly says, to stop the forces driving this new climate apartheid," he told BBC News. [...] According to the IPCC, the use of some technologies designed to limit warming or reduce CO2 could make matters worse rather than better. [...] "If you remove CO2 from the atmosphere, you'll get a rebound effect from the others in the carbon cycle," said Linda Schneider from the Heinrich Böll Foundation, who was an observer at the IPCC discussions.