As we end the week, these are the stories making headlines.

Haley slams Russia over spy poisoning in Britain

US Ambassador to the United Nations Nikki Haley said Wednesday the Trump administration “stands in absolute solidarity with Great Britain” following a nerve agent attack against a Russian double agent and his daughter in the English city of Salisbury last week.

North Korean foreign minister heads to Sweden

North Korea’s foreign minister was flying to Sweden on Thursday, the Swedish government said, in the first significant diplomatic move by Pyongyang since US President Donald Trump said he’d be willing to meet North Korean leader Kim Jong Un a week ago.

Inside the US nuclear sub challenging Russia in the Arctic

Thousands of miles from homeport, the Hartford cruises the Arctic Ocean — the site of a potential new flashpoint between Russia and the US. CNN saw at first hand how it can launch a two-ton 20-foot-long torpedo capable of destroying an enemy submarine in an instant.

Astronaut’s DNA changed by year in space

Preliminary results from NASA’s Twins Study reveal that 7% of astronaut Scott Kelly’s genes did not return to normal after his return to Earth two years ago. The study looks at what happened to Kelly before, during and after he spent one year aboard the International Space Station through an extensive comparison with his identical twin, Mark, who remained on Earth.

Nigerian leader vows ‘no rest’ till abducted Dapchi and Chibok girls go free

“There will be no rest till the last girl, whether from Chibok and (or) Dapchi, is released,” Buhari said in a statement, referring to the towns where the terror group has struck in the past four years.

Toys ‘R’ Us will close or sell all US stores

The iconic toy retailer will shut or sell all of its almost 800 stores in the United States, a source familiar with the matter told CNNMoney on Wednesday. The company’s CEO, David Brandon, notified employees earlier in the day, according to an earlier report by The Wall Street Journal.

Woman jailed after fatal YouTube stunt

A US woman has been sentenced to six months’ imprisonment for shooting dead her boyfriend in a botched stunt they hoped would go viral on YouTube. Monalisa Perez, now 20, was asked by Pedro Ruiz, 22, to fire a gun from a foot (30cm) away, believing a thick book he held in front of his chest would shield him.

A terrible night for Trump in Pennsylvania

A special congressional election in Pennsylvania has given President Donald Trump a bloody nose and offers some key lessons for both parties. The final results aren’t in yet – Democrat Conor Lamb clings to a lead of around 500 votes out of more than 200,000, with a few thousand absentee ballots left to count.

3D-printed home takes 48 hours to build

More than a billion people in the world go to sleep each night without reliable shelter. But a pair of companies working on solving that believes their model of quickly 3D-printing a one-story house could not only provide merely a roof over the head, but a genuinely great place to live.

US ‘stands in solidarity’ with UK on Russia

The White House says it “stands in solidarity” with the “its closest ally” the UK and supports its decision to expel 23 Russian diplomats. PM Theresa May said the diplomats would be expelled after Moscow refused to explain how a Russian-made nerve agent was used on a former spy in the UK.

Japan Nobel winner’s wife found dead in US

Police in the US are investigating the death of the wife of a Japanese Nobel Prize-winning chemist in Illinois. The couple had been reported missing from their home in the state on Monday. Ei-ichi Negishi was found by police wandering along a road near Rockford early on Tuesday morning and was taken to hospital.

Missing Nobel Prize Winner Found In Rural Illinois; Wife’s Body Discovered In Landfill

March 14 (Reuters) – A Japanese Nobel-winning chemist was discovered wandering in rural Northern Illinois and his wife found dead nearby, some nine hours after they had been reported missing from their home 200 miles away, police said on Wednesday.

Man Katy Perry Kissed On ‘American Idol’ Says He Didn’t Like It

Katy Perry kissed an “American Idol” contestant ― and he didn’t like it. Benjamin Glaze spoke to The New York Times about what he described as the “uncomfortable” kiss ― which happened to be his first kiss ever ― broadcast Sunday on the season premiere of the recently rebooted show.

Here Are Barack Obama’s 2018 March Madness Picks

March Madness is upon us, and former President Barack Obama has released his bracket. Since leaving the White House early last year, Obama has carried on his tradition of sharing his March Madness bracket with the public. While in office, he would fill out his bracket with ESPN, a custom President Donald Trump has chosen not to repeat.

The cryptocurrency market is taking a pounding

Bitcoin, Ethereum, and all other major cryptocurrencies are continuing their downward slide. The prices of all top 10 coins are down by double-digit percentages in the last 24 hours, according to CoinMarketCap. Bitcoin is currently trading at $7,951, a 13.4 percent decline, while Ethereum is at $592, a 14.6 percent drop.

Platypus milk is not a new trendy milk, but it could save lives

Platypus milk: It’s not the new almond milk, but it could save lives. Milk from Australia’s duck-billed, egg-laying monotreme could be crucial to the fight against antibiotic resistance, thanks to new research by Australian scientists.

Meet the man whose voice became Stephen Hawking’s

Stephen Hawking’s computer-generated voice is so iconic that it’s trademarked – The filmmakers behind The Theory of Everything had to get Hawking’s personal permission to use the voice in his biopic. But that voice has an interesting origin story of its own.

Now we know why Siri was so dumb for so long

It’s no secret that Siri is way behind other voice assistants like the Google Assistant and Amazon’s Alexa when it comes to comprehension and total number of skills.