A look at some of the biggest stories today.

Catalonia independence vote descends into chaos

Catalan President Carles Puigdemont condemned “indiscriminate aggression” against people attempting to vote peacefully. Spanish authorities appeared determined to prevent the vote from taking place. Regional authorities said 337 people had been wounded by national police sent in by the government to close down polling stations. Catalan emergency services confirmed the number to CNN.

O.J. Simpson released from prison

“O.J. Simpson is out, he is a free man,” Nevada Department of Corrections spokeswoman Brooke Keast said. Simpson was freed early Sunday and was picked up by a friend, according to Keast. Simpson, 70, served nine years of a 33-year sentence for kidnapping and armed robbery after a raid on memorabilia dealers in a Las Vegas Hotel room.

Catalonia’s independence referendum: What to know

Spain’s Constitutional Court has outlawed the plebiscite, and the national administration in Madrid asserts that any such vote would be unconstitutional. The dispute between the regional government in Barcelona and the Spanish government has become increasingly bitter in recent weeks, with several high-ranking Catalan officials involved in organizing the referendum arrested, and mass protests in the region’s capital of Barcelona and other towns.

Puerto Ricans fire back at Trump for critical tweets

Several Puerto Ricans contacted by CNN stood up for San Juan Mayor Carmen Yulín Cruz, who apparently provoked the Trump tweet with a call for more aid, and many said the Puerto Rican community at home and abroad is already working together.

Five hurt as Edmonton attacks spark terror investigation

A suspect, who has not been identified, is in custody, said Chief Rod Knecht of the Edmonton Police Service in an early Sunday news conference. Knecht said authorities believe the man acted alone, but haven’t ruled out the possibility that others might be involved. The first incident happened Saturday at 8:15 p.m.

Air France superjumbo engine failure forces emergency landing in Canada

The double-deck Airbus A380 aircraft landed safely at Goose Bay Airport on the eastern tip of Canada, according to a statement from Air France. The airline said it suffered “serious damage to one of its four engines.” “The regularly trained pilots and cabin crew handled this serious incident perfectly,” the airline said in a statement.

FC Barcelona bars public from match in vote chaos

After an emergency board meeting, the club said it had taken the decision to ban fans from the match against Spanish club Las Palmas on Sunday after the national league refused to postpone it.

Obama, Joe Biden join Prince Harry in Toronto

Prince Harry brought along some popular friends at the Invictus Games in Toronto this year. The prince was pictured chatting and laughing Friday with former President Barack Obama, accompanied by his Vice President, Joe Biden and wife, Jill. The foursome cheered on the teams and took photos with players.

Scientists edit gene for blood disease in human embryos

For the first time, scientists used a controversial gene-editing technique called base editing to correct a gene mutation in human embryos linked to the hereditary blood disorder beta thalassemia, according to the study published in the journal Protein & Cell in September.

Spanish Riot Police Storm Catalan Polling Place, Wounding 38

BARCELONA (Reuters) – Spanish riot police smashed their way into a polling station in Catalonia on Sunday as they sought to shut down a banned independence referendum and there were reports of officers firing rubber bullets in the regional capital Barcelona. Catalan emergency services said 38 people were hurt, mostly with minor injuries, as a result of police action.

Donald Trump Is Using Puerto Rico’s Crisis To Push His War Against The Media

While residents of Puerto Rico struggle to get access to basic necessities like potable water and food, President Donald Trump has launched a full-fledged attack on the news media and, even more concerning, San Juan Mayor Carmen Yulín Cruz.

Trump: ‘Very Important’ For NFL Players To Stand For Anthem

(Reuters) – On the eve of a host of National Football League games, President Donald Trump on Saturday tweeted that it was “very important” that players stand during the national anthem, following an ongoing controversy over athletes and others kneeling in protest.

Model Awaits Surgery After Eyeball Tattoo Goes Extremely Wrong

A model from Ottawa, Canada, could have permanent vision loss in one eye after her now-ex-boyfriend attempted to tattoo her eyeball with purple ink. “The artist, my ex-boyfriend, just kept pushing me until I got it done that night,” Catt Gallinger, 24, told Vice.

President Trump Compliments Kim Jong-un, Makes Case for North Korean Nukes

Presumably President Donald Trump believed he was sticking a rhetorical dagger in North Korean dictator Kim Jong-un’s heart by calling the latter “Rocket Man.” But what greater compliment could there be for the leader of a small, impoverished, and isolated nation than being recognized the U.S.

‘SNL’ Does Its Best To Catch Up On A Summer Of Trump Jokes

“Saturday Night Live” returned with vengeance in its 43rd season Saturday, desperately trying to catch up on a summer of President Donald Trump changes. In a rushed cold open, “SNL” tries to hit on Puerto Rico, football protests, administration shake ups, and Deferred Action for Childhood Arrivals.

Malala Asked The Internet For College Advice And People Deliver

She might be the youngest Nobel laureate in history, but Malala still needs a college checklist. Malala Yousafzai is headed to Oxford University this fall to further her education, and the 20-year-old Nobel Peace Prize recipient, who went head-to-head with the Taliban, needs help packing her bags.

Trump lashed out at San Juan’s mayor after she begged for help in Puerto Rico

In a truly low moment among low moments, President Donald Trump attacked Carmen Yulín Cruz, the mayor of San Juan, Puerto Rico, on Saturday morning after she criticized his administration’s response to Hurricane Maria. “The Mayor of San Juan, who was very complimentary only a few days ago, has now been told by the Democrats that you must be nasty to Trump,” Trump tweeted early Saturday.

NBA to players and coaches: You must stand for the national anthem

For our latest edition of “professional sports organizations really don’t get it” we highlight the National Basketball League. A Friday memo sent by the league to all players and coaches made a point of reinforcing an existing rule that everyone is required to stand for the national anthem.

Alec Baldwin’s Donald Trump returns to ‘SNL’ wearing a golf shirt, of course

Alec Baldwin decided not to retire his Emmy-winning President Trump impression after all, kicking off season 43 of Saturday Night Live with a catch-all cold open that brought The Donald back from his important golf trip to deal with such national crises as … disciplining a naughty little “bad boy” Jeff Sessions.

Air France flight to LA makes emergency landing in Canada after engine blows out

An Air France flight en route from Paris to Los Angeles made an emergency landing in Goose Bay, Canada after its engine blew out over the Atlantic Ocean Saturday. The Airbus A380 left Charles de Gaulle Airport Saturday morning and landed around 1:40 p.m. in Canada, CBC reported.

Katy Perry’s $9.5-million mansion will make you roar

If you’ve ever felt like a plastic bag, drifting through the wind, then this house is for you. Pop singer Katy Perry has her Hollywood Hills mansion up for sale – for $9.5 million, according to real estate website Trulia.

If you didn’t know, Puerto Rico is surrounded by ocean water, according to Trump

Puerto Rico, in the aftermath of Hurricane Maria, has not been helped by much President Trump. The U.S. territory has been suffering from a humanitarian crisis over the past week.

Cameroon bans pro-independence rallies

Cameroon has banned public meetings and travel in a mainly English-speaking region ahead of a protest to demand independence for the area. The South-West region’s border with Nigeria has also been shut to block “infiltration” by people threatening Cameroon’s unity, officials said. Pro-independence marches have been planned for Sunday, the 56th anniversary of Cameroon’s unification.

Laos is ‘fastest growing’ ivory market

The fastest growing ivory market in the world is now Laos, according to an investigation by Kenya-based group Save the Elephants. China is banning all ivory trade by the end of 2017, but business is booming in neighbouring countries. Investigators visited a Chinese casino resort on the Mekong River.

How to cure a hangover

No-one would advocate excessive drinking but there are times of celebration when the best of us can get carried away. If you’ve gone slightly overboard of an evening, or can see a heavy night on the cards, there’s no need to write off the next day.

The Japanese dinner delicacy that could kill you

BBC’s Travel Show If you liked this story, sign up for the weekly bbc.com features newsletter called “If You Only Read 6 Things This Week”. A handpicked selection of stories from BBC Future, Earth, Culture, Capital and Travel, delivered to your inbox every Friday.