For giggles: A 3 square-foot pipe from here to Mars at Mars' closest point of approach would hold about 31.7 million metric tons of CO2 at atmospheric pressure

For giggles: A 3 square-foot pipe from here to Mars at Mars' closest point of approach would hold about 31.7 million metric tons of CO2 at atmospheric pressure [1], which looks to be about 2 day's worth of US emissions. [1]: https://www.google.com/search?q=38.6+million+miles+*+3+feet%5E2+*+0.001836+g%2Fcc+in+metric+tons&hl=en&sxsrf=AOaemvIuGj8tL1x6xQDm3YTQ5lb5fDkDpg%3A1632509242217&ei=Oh1OYdjNDMO5tAaz24GgDw&oq=38.6+million+miles+*+3+feet%5E2+*+0.001836+g%2Fcc+in+metric+tons https://www.google.com/search?q=38.6+million+miles+*+3+feet%...