Vice President JD Vance traveled to his hometown, Middletown, Ohio, and spoke at a steel factory where his grandfather once worked.

© Jon Cherry/Associated Press

Africans have turned to one of their own for fuel as the world’s supplies run low. But they are not the only ones with the continent’s richest man on speed dial.

© Taiwo Aina for The New York Times

Our reporter, Apoorva Mandavilli, goes inside a mosquito factory in Brazil, where scientists are producing millions of mosquitoes to fight deadly tropical diseases in a warming world.