Cars and buildings were set on fire as rioting continued across Baltimore.

At least 15 police officers were hurt, and six remained hospitalized. Two dozen people were arrested amid fires and looting.

A daily curfew begins at 10 p.m. today, and the city’s public schools are closed.

• Nepal’s devastation.

Aid workers arriving at the edge of the earthquake’s epicenter describe entire villages reduced to rubble, and the prime minister said today that the death toll could reach 10,000.

The U.N. says that 8 million people — more than a quarter of the population — have been affected.

• Justices debate same-sex marriage.

Lines began forming at the Supreme Court last week for the few seats available to today’s arguments over same-sex marriage, which exists in about three-fourths of U.S. states.

The two major questions the justices face is whether states must allow same-sex couples to marry and whether states must recognize same-sex marriages performed elsewhere.

• Extreme weather and the pope.

Scientists, economists and U.N. officials gather at the Vatican today to help build momentum for Pope Francis’s campaign for a sweeping U.N. climate change accord.