Fifty years ago, the idea of reducing the amount of sunlight reaching the earth to address climate change officially entered the scientific and political vernacular. That concept has since been lumped under the banner of geoengineering with other hotly debated techniques that could help cool the planet.
Five years ago, President Barack Obama's science advisor said that geoengineering has "got to be looked at." On Tuesday, a report funded by federal agencies and released by the nonprofit National Academy of Sciences (NAS) provided a detailed look at the state of geoengineering and suggests how the government could develop a program to better understand the consequences of further planetary tinkering, including small-scale tests. Read more...
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