NEGATIVE CARBON DIOXIDE EMISSIONS A discussion: “Trouble with negative emissions ?” Kevin Anderson and Glen Peters assert that negative-emissions technologies are an “unjust and high-stakes gamble.” Klaus Lackner et al contradict the authors: “This characterization would sideline negative- emissions technologies and remove potentially important options from the portfolio...

CO₂ is emitted in large quantities as a consequence of our burning of fossil fuels. It has several unpleasant consequences, because it will probably cause climate change, and there are several reports that high levels of CO₂ in offices and schools may impair the quality of thinking of...

Bill Gates Q&A on Climate Change: ‘We Need a Miracle’ When I say “miracle,” I don’t mean something that’s impossible. I’ve seen miracles happen before. The personal computer. The Internet. The polio vaccine. None of them happened by chance. They are the result of research and development...