Another thing to consider. It would take 4 Earth if everyone lived like an American. But this does not mean that Americans live better lives than, say Europeans, because they use more of Earth's resources and emit more CO2. In fact, most countries follow a bell curve in the economic history. Third world countries (poor and undeveloped) have low consumption and low emissions. As they start industrialising and growing economically, countries start using more resources, but usually in an inefficient and polluting way. That's why the most polluted cities on Earth are always in developing countries. In the 1960's and 70s the air in Japanese cities was barely breathable, very much like in Chinese and Indian cities today. Then Japan adopted stricter environmental laws to keep the air cleaner, for example banning diesel engines and big trucks from cities. Developing countries typically produce electricity using cheap and dirty coal or petrol, then switch to cleaner alternatives as they become developed. Since very recently it's now cheaper to produce electricity from solar and wind than with coal or petrol, so things are changing for the better.
The reason why Americans, and even more so Canadians, are using more resources and emitting more CO2 than Europeans is that:
1) Their
houses are less well isolated and North American
winters are much harsher even than Scandinavia. That's actually the main reason why Canadians have higher emissions than Americans.
2) Americans drive much
longer distances, with more fuel-hungry cars (like pickup trucks, which are almost inexistent in Europe).
3) Americans are much, much
more reliant on cars than on cleaner public transports like trams, metros and trains.
4) Only a fraction of North Americans use
bicycles to go around their city (in great part due to the lack of proper infrastructure).
5) Americans
waste twice more food in average than Europeans (and six times more than the Japanese!) and
recycle much less (about three times less than Germans, Dutch, Belgians, Swiss, or Austrians).
6) Americans lag behind in terms of
renewable energy.
As of 2022,
the US produced only 11.3% of its energy from renewables, against 71% for Norway, 53% for Sweden, 48% for Brazil, 43% for Denmark and New Zealand, 37% for Austria, 33% for Switzerland, 31% for Canada, 28% for Portugal, around 20% for Spain, Germany, the United Kingdom and Ireland. Even China is at 16% now.
None of this is making the US more developed or a better place to live. Quite the contrary actually. It seems that the US is stuck with the economy and system of a developing country that doesn't want to mature into adulthood. That's almost certainly because of the oil industry lobby that throws all its weight around and pull the strings behind the scenes to prevent change in US society. Well that's only one of the reason, one that keeps lots of fuel-hungry cars on the road and encourage people to go on useless 'road trips'. When it comes to food waste and recycling, that's on private citizens. It's probably just a poor upbringing and lack of common sense.
Despite what many Americans like to think, the quality of life in the US is not that high by international standards. American cities never make it to the top 10 of The Economist's
Global Liveability Ranking, or the top 25 of
Monocle's Quality of Life Survey, or the top 30 of
Mercer's Quality of Living Ranking (the best rated U.S. city was San Francisco, ranked 34th, while New York was ranked 44th, behind all capitals and major cities in Canada, Australia and Western Europe apart from Madrid and Rome, which aren't far behind). Nationwide, the US is
ranked 16th for quality of life by Numbeo - but it is ranked 67th for safety, 62th for pollution and 35th for healthcare.
In conclusion, the world does not need to live like Americans. It's Americans who need to change and adopt more responsible attitudes. That won't lower their living standards and will in fact increase them by saving lots of money that is otherwise wasted in heating, petrol for car, wasted food, etc.