Here are some of today’s biggest headlines in the world.

Twitter labeled Trump tweets with a fact check for the first time

For the first time, Twitter has labeled a tweet from President Donald Trump as misleading.

Trump takes his war on masks to new heights

The simple act of wearing a mask to protect others during a pandemic is now a political and cultural flashpoint, underscoring the polarization afflicting every corner of American life.

He asked Twitter to remove Trump’s false tweets about his dead wife. Twitter refused

Six times this month, in a vile attempt to punish a political rival, President Trump has tweeted about a decades-old conspiracy theory about MSNBC’s Joe Scarborough.

Fact check: Trump falsely claims California is sending mail-in ballots to undocumented immigrants

Twice on Tuesday, President Donald Trump attacked California’s Democratic Gov. Gavin Newsom and his executive order expanding vote-by-mail in the state. Specifically, Trump claimed that Newsom’s order would send ballots to everyone in California, including nonresidents and undocumented immigrants.

Australia angered China by calling for a coronavirus investigation. Now Beijing is targeting its exports

With ministerial ties fraying and anti-Australian rhetoric rising in Chinese state media, experts say deep cracks are emerging in relations between the two countries.

Jimmy Fallon apologizes for appearing in blackface in 2000 ‘SNL’ sketch

Jimmy Fallon is addressing his impersonation of Chris Rock in a “Saturday Night Live” sketch from 20 years ago in which he appeared in blackface.

Scientists didn’t detect a parallel universe in Antarctica. But they are learning more about mysterious, ghostly neutrinos

Strange data captured by an instrument in Antarctica didn’t provide proof of a parallel universe, the instrument’s principal investigator says. The quest to understand neutrinos, strange particles that are prevalent in the universe, is ongoing.

Iconic celebrity portraits to be auctioned for Covid relief

US photographer Mark Seliger is to auction off portraits of famous names such as Brad Pitt and Amy Schumer to raise money for the fight against coronavirus. Seliger is known for his portraits of celebrities, politicians and musicians for Rolling Stone and Vanity Fair magazines, and soon these pictures will be made available in aid of fundraising and advocacy campaign RADArt4Aid, according to a press release.

People are buying lots of booze, but global alcohol sales are still tanking

People are buying a lot of booze. But with bars and restaurants closed and live events canceled because of coronavirus, the global alcohol industry is getting hit hard and may take several years to recover.

Twitter tags Trump post with fact-checking warning

A post by US President Donald Trump has been given a fact-check label by Twitter for the first time. President Trump tweeted: “There is NO WAY (ZERO!) that Mail-In Ballots will be anything less than substantially fraudulent.” Twitter placed a warning label under that message and a subsequent tweet.

The Auschwitz doctor who couldn’t ‘do no harm’

On 15 April 1945, Dr Gisella Perl delivered a crying, screaming baby. As for all of her other deliveries in the last year, the Hungarian gynaecologist had no tools, no anaesthetics and no assistance. The mother, a young Polish woman named Marusa, was feverish and weak.

Nasa SpaceX set for historic launch from Florida – BBC News

Welcome to the BBC’s live coverage of the first space launch with astronauts from US soil in nine years. At 16:33 EDT (20:33 GMT; 21:33 BST). Nasa crew members Doug Hurley and Bob Behnken will lift off from Florida’s Kennedy Space Center atop a Falcon 9 rocket.

Death of US black man in custody sparks clashes

There have been violent clashes between police and protesters in the US city of Minneapolis following the death of an unarmed black man in police custody. Police fired tear gas and protesters threw rocks and sprayed graffiti on police cars. Video of the death shows George Floyd, 46, groaning “I can’t breathe” as a policeman kneels on his neck.

Can Lady Gaga become the world’s biggest pop star once more?

Lady Gaga’s sixth album Chromatica arrives this Friday following a slight delay – it was originally scheduled for 10 April until the coronavirus intervened – but this hasn’t stopped the pop star from talking a good game in her usual vague but visionary way.

J.K. Rowling’s new children’s story will be online for free

J.K. Rowling will finally publish The Ickabog, a “stand-alone fairy tale” and her first children’s story since Harry Potter – online, for free. New chapters will go live on the Ickabog website at 3 p.m. GMT daily between now and July, starting with the first two on Tuesday.

New Facebook app aims to bring back the phone call

The people whose calls you dodge are sure to love this new app from Facebook. On May 26, Facebook’s New Product Experimentation (NPE) Team announced the launch of an app that’s basically Houseparty for phone calls (not video calls).

Twitter just fact-checked Donald Trump

Donald Trump lied today on Twitter. And, unlike every other day, Twitter finally called him out on it. In a series of Tuesday morning tweets, the president claimed – falsely – that providing mail-in ballots to the residents of California would automatically result in a “Rigged Election.”

The 10 best kids’ movies on Netflix right now

All products featured here are independently selected by our editors and writers.If you buy something through links on our site, Mashable may earn an affiliate commission. School’s out for the summer, and Netflix is here to help.