Hansen calls for carbon extraction or negative emissions The iconic climate guru has taken a position in favour of CO2 extraction. Probably too early to call this a tipping point, and I did not expect this to happen so soon. Nevertheless, it does represent a significant move by a significant opinion maker. Much of the […]
Welcome to Pleistocene Park
In Arctic Siberia, Russian scientists are trying to stave off catastrophic climate change—by resurrecting an Ice Age biome complete with lab-grown woolly mammoths. A longish read there’s a 60 min audio version available and a 26 min video. Pleistocene Park is named for the geological epoch that ended only 12,000 years ago, having begun 2.6 […]
Calcite for solar geoengineering
Calcite is a promising material for geoengineering; it may work without increasing ocean acidity. …read more