Potentially large economic impacts of climate change can be avoided by human actions

A study estimates global-scale, multi-sectoral economic impacts of climate change, and suggests that a plausible range of decisions and actions by humans can determine the scale of the economic impacts, even if the uncertainty in the climate response to increased greenhouse gas concentration is considered. These actions include reductions of greenhouse gas emissions and improvement of socioeconomic conditions. This study highlights the importance of societal changes and the current generation's responsibility for the future.

Read more

Aerosols from coniferous forests no longer cool the climate as much

Emissions of greenhouse gases have a warming effect on the climate, whereas small airborne particles in the atmosphere, aerosols, act as a cooling mechanism. That is the received wisdom in any case. However, new research can now show that the tiniest aerosols are increasing at the expense of the normal sized and slightly larger aerosols — and it is only the latter that have a cooling effect.

Read more