SWI: Is sucking CO2 from the air the answer to global warming?
TheNewEconomy: Carbon-removal projects could turn back the clock on climate change
YaleEnvironment360:Climate Solutions: Is It Feasible to Remove Enough CO2 from the Air?
Siegel, R. (2018): The Artificial Tree
Vattioni, S.; et al. (2018): Exploring accumulation-mode-H2SO4 versus SO2 stratospheric sulfate geoengineering in a sectional aerosol-chemistry-climate model
InTheseTimes: To Block Out the Sun
Hamburger Abendblatt: 100 questions of life: Can we control the climate?