Now only Afghanistan and Pakistan still have cases of wild polio, the most threatening form of the disease. The African Regional Certification Commission for Polio Eradication officially declared the continent free of the virus on Tuesday. Despite the progress, 16 African nations have recorded cases of vaccine-derived polio, a mutated form of the weakened virus from the oral polio vaccine.

Rioting protesters threw bottles at police, ignited fireworks, and set buildings on fire Monday night in Kenosha, Wis. Officers responded with tear gas. Gov. Tony Evers deployed 125 members of the Wisconsin National Guard to the city after riots broke out the previous night following a shooting involving police officers responding to a domestic dispute. Officers shot 29-year-old Jacob Blake multiple times while his three young children waited in his SUV.

On the first night of the convention, Republican speakers said in their remote addresses that the country risks falling into socialism, economic ruin, and lawlessness without President Donald Trump. Earlier on Monday, Trump officially accepted the party’s presidential nomination in Charlotte, N.C., before a crowd of more than 300 socially distanced delegates.

A 29-year-old black man remains in serious condition after police officers responding to a “domestic incident” on Sunday in Kenosha, Wis., appeared to shoot him in the back seven times, according to a video posted on social media. The man identified as Jacob Blake is shown opening the driver’s side door of an SUV as three officers shout and point weapons at him. As Blake leans inside the car, one officer grabs his shirt from behind and opens fire. The Kenosha Police Department has not released any details but said the man is receiving medical treatment in Milwaukee.

Forecasters expect Tropical Storm Marco to make landfall on the Louisiana coast Monday after weakening from hurricane strength on Sunday. Tropical Storm Laura will pass through the Gulf of Mexico and is expected to strengthen into a hurricane before hitting the Louisiana coast later this week. A storm surge warning is in place in parts of coastal Louisiana and Mississippi. President Donald Trump has approved emergency declarations for both states.

Students in Thailand lifted three fingers in a Hunger Games–style salute as they sang the Thai national anthem during morning assembly at several high schools this week. Others donned white ribbons to show solidarity with growing protests against the monarchy and the military-led Thai administration.

On the final day of the Democratic National Convention, former Vice President Joe Biden pledged to unite the nation and “overcome this season of darkness.” After his acceptance speech Thursday night inside the empty Chase Center in Wilmington, Del., the celebration moved outside, as fireworks lit up the night sky and supporters in cars honked their horns, flashed their lights, and waved flags. Biden becomes his party’s nominee for president after unsuccessful bids in 1988 and 2008, when he later joined Barack Obama on the Democratic ticket as his running mate.