Greg Rosalsky

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Twenty years before a wealth tax became a serious consideration in national politics, two legal scholars battled over whether the policy would be constitutional.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Normally, peer review is a boring process held behind the closed doors of the ivory tower. But the debate over The Triumph Of Injustice, the new book by Gabriel Zucman and Emmanuel Saez, has become like a proxy battle for the Democratic presidential primary.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

"I don't think that billionaires should exist," Senator and presidential candidate Bernie Sanders said last week. And he's now proposed a way to get rid of them: his version of a wealth tax on the .1% richest families in America.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Editor's note: This is an excerpt of Planet Money's newsletter. You can sign up here.

Feeling sluggish? Having trouble achieving and maintaining productivity growth? Does it feel like investment will never, ever go up? You may be experiencing secular stagnation.

Symptoms include persistently low interest rates and weak inflation. Also, mediocre economic growth, despite a diet of huge deficits and cheap credit.