Flávio Bolsonaro’s first round lead leaves President Luiz Inácio Lula da Silva three weeks to find the votes to stop Brazil’s, and Latin America’s, rightward shift.
The justices are about to hear a lawsuit that could determine whether the oil industry faces billions of dollars in liability for damages caused by global warming.
We asked 100 scientists about unsolved problems in their fields. They sent back provocations — on the origins of life, the possibilities for human progress and much more.