Rollercoasters are closed across the U.S. and Canada after a man is thrown to his death from a ride at a Six Flags amusement park in Georgia. Our guest had just been on that coaster — and tells us what he saw from the ground.

Saudi Arabia strikes an oil facility in the Houthi-controlled capital of Yemen in retaliation for multiple attacks on Riyadh's international airport. And an analyst tells us the tit-for-tat risks fuelling a wider conflict.

A linguistics professor has reviewed the questions Albertans will answer in next week's referendum and she says they're substantially above the average person's reading level.

Charges laid against the man accused of Prince Edward Island's only unsolved murder are dropped just weeks before the trial was set to begin — after police reveal key evidence has gone missing.

Hundreds of scientists sign onto a letter calling for an international authority that would set standards for the safe development of artificial intelligence. One of the authors tells us he thinks it's our best shot at keeping the machines at bay.

Researchers find that elephant carcasses boost the ecosystem in the area where they died for years afterwards.

NASA’s Perseverance rover breaks the record for the longest drive on another planet; a rover scientist shares the highlights of the trip so far.

New research suggests extreme monotony can make people extremely aggressive — a conclusion that's been a yawn time coming.

As It Happens, the Tuesday Edition. Radio that keeps a close eye on the interest rates.