The Independent writes, "Climate scientists: it's time for Plan B". A poll of leading climate scientists says geoengineering may become necessary in the near future.

"This "geoengineering" approach – including schemes such as fertilising the oceans with iron to stimulate algal blooms – would have been dismissed as a distraction a few years ago but is now being seen by the majority of scientists we surveyed as a viable emergency backup plan that could save the planet from the worst effects of climate change, at least until deep cuts are made in CO2 emissions.

With the looming threat of climate tipping points, we need to conduct careful research to understand whether and how the various geoengineering proposals can help with the fight against climate change.