Reducing your own carbon footprint is great, but it won’t save the planet unless governments and corporations step up

More generally I think it's about doing things that will scale. Whatever you do, it should be with some thought about how to get lots of people doing it, and often that means changing existing organizations.

According to this list, the U.S. is responsible for 14.75% of all greenhouse gas (GHG) emissions, second behind China. According to these charts, industry is responsible for 22% of U.S. GHG emissions. So... U.S. industry accounts for ~4% (if my math is correct) of global greenhouse gas emissions. Transportation accounts for 29% of U.S. GHG emissions, of which medium/heavy-duty trucks (which I'm reading as "commercial") account for 21%, or ~0.9% of global emissions (numbers found on page 3 here). U.S. commercial aviation makes up ~0.27% of global emissions. Emissions from ships, rail, pipelines, and lubricants (which I'll assume is all commercial), is ~0.28% of global emissions. Non-transporation emissions (which look to be commercial) make up ~0.4% of global emissions. Commercial emissions, a separate category itself, account for 6% of U.S. emissions, or ~0.89% of global emissions. Electricity

So, in all, it looks like U.S. commercial and industrial emissions account for ~6.74%+whatever % of electricity generated goes towards commercial and industrial means* of GHG emissions.

Light-duty vehicles (which I read as being owned by private citizens) account for 53.3% of U.S. GHG emissions, or ~2.28% of global emissions.

This is all U.S.-centric, of course, but considering the U.S. is the second leading GHG emitter...figured they'd be interesting numbers to compile.

Anyway, I think a multi-front approach is definitely key. People could be driving less, government can be calling for manufacturers to adhere to stricter MPG standards, corporations could be cutting down on waste

*I was in the process of looking up those numbers and trying to get an idea, but I've been interrupted.