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Overview: President Trump and the leaders of the country's largest artificial intelligence companies have signed a set of voluntary safety standards, as calls mount for tighter guardrails on powerful AI technology.

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The MacArthur Foundation has just announced its latest batch of 20 fellows.

The federal government has spent at least $1.7 million to air three different TV ads featuring President Donald Trump in recent days, according to an estimate from AdImpact, which tracks and analyzes political ad spending across television, digital and connected TV channels.

Trump and major AI executives sign "morally binding" voluntary controls

Flynn was found guilty of killing his wife, Ashley, in February and attempting to blame the murder on a break-in at their home.

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CBS News' Megan Cerullo has more.

The British singer's songs have ranged in subject matter from being single to sexual assault and coping with drugs and alcohol.

ABC News' Linsey Davis talks to "Outlander: Blood of my Blood," stars Jeremy Irvine and Hermione Corfield on season two of the hit show, time traveling and their years-long friendship.

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Transportation correspondent Gio Benitez reports on elevated airfares as industry analysts warn travelers could be stuck paying higher fares for months, even if fuel prices fall.

WATCH: Used GLP-1 injector pens causing injury to sanitation workers: Officials

Lindsay Clancy's lawyer now questions whether she killed her 3 children

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