Assorted Links Sunday

Why smoke follows you around a fire:

And the real key to understanding why smoke keeps blowing in your face is that the rising air doesn't just rise on its own. It is pushed by the air around it. Because when hot air moves away from the fire, the air that pushed it keeps right on going and fills the gap that the hot air left behind. And this is where you come in.

The rich are not who we think they are. And happiness is not what we think it is, either: A groundbreaking 2019 study analyzed de-identified data of the complete universe of American taxpayers to determine who dominated the top 0.1 percent of earners.

The researchers found that the typical rich American is, in their words, the owner of a “regional business,” such as an “auto dealer” or a “beverage distributor.”

When were U.S. home prices at their worst?

Working for yourself might bring freedom and autonomy, but it increasingly comes with a major risk: low pay.

President Biden on Friday during a trip to Ohio launched a new initiative aimed at lowering costs for American families by focusing on 3D printing: The AM Forward is part of Biden’s efforts to improve supply chain resilience by getting private sector companies to purchase additive produced parts from smaller U.S.-based suppliers.

Rethinking supply chains: Retailers turn toward private fleets.