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Cainiao, the logistics arm of Chinese tech giant Alibaba, processes millions of parcels to send around the world. CNN's David Culver goes inside a warehouse to see how it gets done.

Eight men have been arrested and four others interviewed under caution as part of an investigation into racist abuse targeted at a Premier League football player, British Police announced on Friday. The investigation was launched after the April 11 Premier League clash between Manchester United and Tottenham Hotspur during which one of the players from the London side was targeted with "a series of highly offensive and racist remarks on Twitter," the Metropolitan police said in a statement.

An overpass carrying a subway train has collapsed in Mexico City, killing 15 people and injuring at least 70, according to local government officials.

Thousands of Australians march in a climate protest in Melbourne, with many children skipping classes to voice their anger at a massive new gas project and government foot-dragging on emissions targets.

Argentina recorded record daily cases of Covid-19 two days in a row this week, highlighting the country's difficulty in bringing a surge under control and forcing the government to weigh whether to extend its restrictions. CNN's Rafael Romo reports.

A Columbus, Ohio, police officer shot and killed a Black teenage girl after she allegedly attempted to cut two females with a knife, according to officials and body camera footage. The bodycam footage has been put in slow motion and blurred by the Columbus Division of Police.

The Nigerian army says it is investigating reports that Boko Haram leader Abubakar Shekau has died after blowing himself up to avoid being captured by a rival group. CNN's Stephanie Busari reports.

The increase in vaccination rates is filling Europe with optimism for summer travel. In the Italian city of Pordenone, a private company opened a vaccination hub on Thursday. In many places it looks like a case of 'full steam ahead'. However, the World Health Organization's regional director for Europe has warned people to be cautious, despite the new variants being effectively fought by the vaccines, the pandemic is far from being over:

Mountaineer simulates high-altitudes at home to avoid Covid-19 in Nepal

Głuchołazy (Poland) (AFP) – The Glucholazy hospital in southern Poland on the border with the Czech Republic has been treating former Covid-19 sufferers for more than nine months as part of a government programme. Among the 1,000 patients treated so far, doctors have found more than 50 distinct physical, neurological and psychological symptoms that linger even when the virus has gone and the number is growing with each new variant.

CNN's Fred Pleitgen gets rare access to a Russian base in the North Pole as Russian President Vladimir Putin rapidly spreads the country's military presence around the Arctic.

Prince William slams 'deceitful' BBC Diana interview