Geoengineers can legally hack climate

摘要

The idea of artificially cooling the climate may have come in from the cold, but the laws governing trials of the technology are still all at sea. Many people think such trials are illegal, but this is not the case, according to an analysis of environmental treaties. The latest report from the UN Intergovernmental Panel on Climate Change includes geoengineering - a sure sign that the idea has become respectable. But research and field trials are needed before we know whether influencing the climate like this is a viable option for cooling Earth.