Silicon Valley Renegades Pollute the Sky to Save the Planet

Some restless entrepreneurs are releasing pollutants in the sky to try to cool the planet. Global Warming, Greenhouse Gas Emissions, Entrepreneurship, Carbon Dioxide, Geoengineering, Start-ups, Sun, Sulfur and Sulfur Compounds, Science and Technology Some restless entrepreneurs are releasing pollutants in the sky to try to cool the planet. NYT > Business