Effects of geoengineering must be urgently investigated, experts say

Impact on ecosystems must be predicted before technology is used, US atmospheric science agency chief says

Scientists must work urgently on predicting the effects of climate geoengineering, the chief of the US atmospheric science agency has said, as the technology is likely to be needed, at least in part.

Richard Spinrad, administrator of the National Oceanic and Atmospheric Administration (NOAA), said the government-backed body was estimating the effects of some of the likely techniques for geoengineering, including those involving the oceans.