Yesterday, NASA aborted a third attempt to launch a probe that would measure the level of atmospheric carbon dioxide, where it comes from, and where it is stored. The agency may try again today, as the probe’s findings, we are told, will be “crucial to understanding how much human activity affects the planet’s climate.”

While we eagerly await NASA’s findings, it is well-known that carbon dioxide emissions are on the rise worldwide. We also know that developed countries emit less, or increase emissions at a slower pace, than in the past. Crucially, developed countries also show falling emissions per dollar of output and per person.

According to HumanProgress.org and the World Bank, developed countries’ growth in carbon dioxide emissions has slowed or reversed over time.

Carbon dioxide emissions per person in these developed countries have been on the decline since at least 2000.

Over time, developed countries emit less carbon dioxide per unit of wealth created.

There are several causes for this trend, one of which is free enterprise. While history shows that corporations can be serious polluters, we also know that the free market helps to reduce emissions. That is because a concern for public opinion coupled with a desire to limit inputs (both of which affect profits) incentivize businesses to reduce emissions. After all, pollution is simply wasted resources contributing nothing to profits, a fact that leads companies to voluntarily reduce their emissions and waste. That is why in 1972, a pound of aluminum yielded 21.75 soda cans and in 2012 (as a result of can-makers’ use of less metal per unit), one pound of aluminum produced 33 cans.