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Taking CO2 out of the air would be an absurdly expensive way to fight climate change
(www.theverge.com)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
Dollar for dollar, planting trees works better then current CO2 connectors. Algae could be industrialized as a source of carbon neutral fossil fuel alternative.
Indeed, and using algae based fuels would make it carbon negative because it would in turn store the carbon it releases cyclically. Algae can be dehydrated, compacted, and stored for extremely dense carbon storage. Planting trees is good as well, also for ecological reasons.