From artificial intelligence to fatalities from music streaming to the effects of immigrants on elderly health care, the Planet Money newsletter rounds up some interesting new economic studies.

Forbes’ Definitive Ranking of the World’s Richest People Features The Most Billionaires In History: A Record-Breaking 3,428 People Worth $20.1 Trillion ...

Much of NASA’s Van Allen Probe A is expected to burn up upon reentry into Earth’s atmosphere on Tuesday. But some of it won’t.

Thanks to AI’s explosion, sizzling markets and supportive fiscal policies, a record 3,428 entrepreneurs, investors and heirs made this year’s World’s Billionaires list, 400 more than in 2025. They are ...