Yet they're claiming that it's anthropogenic climate change when they don't have a control earth or past records to indicate how the multifaceted system of equilibriums will adjust to things like a rise in atmospheric CO2. Theorycrafting is fine and wasteful pollution is legitimately bad. Plant more trees, try to build smarter— like we were doing 100+ years ago with shade trees, cross ventilation in buildings, not using glass and plastic everywhere because it looks fancy, etc. A lot of the plans we see to reduce emissions are accountant level number manipulation rather than functional improvements. Some are good; it makes sense to push for brushless motors in ceiling fans.