Powerade is appropriate for World Cup athletes, but unless you’re also sweating buckets, water is usually enough. | Photo: Megan Briggs / Getty Images This is Optimizer, a weekly newsletter sent from Verge senior reviewer Victoria Song that

It's a big year for America. It's the semiquincentennial, otherwise known as America250, and the United States is cohosting the World Cup. But spectators at these events - and the millions of people who live in the cities hosting them - may