Your World Tonight

Ottawa is extending the federal excise tax holiday on gasoline and diesel until 2027. Finance Minister François-Philippe Champagne says the goal is to help Canadians with the cost of living. But businesses and consumers say the price of gas is still hitting their bottom lines.

And: Court filings in a lawsuit against OpenAI and its CEO provide more detail on what happened the day of the shootings in Tumbler Ridge, B.C.. The lawsuits allege that even those with no physical injuries are suffering from what they witnessed in the attack in February.

Also: Canadian companies are trying to get a bigger slice of the used clothing market pie. Lululemon is the latest to allow customers to buy and sell pre-owned items on its site.

Plus: More comments from Trump on Canada as his trade representative answers questions from fellow Republicans, the Iran-U.S. war is pulling in Arab neighbours — again, and more.

Prime Minister Mark Carney says trade talks with the U.S. can resume once the White House stops insulting Canada. He says recent jabs at Canada’s military are beneath the office of U.S. cabinet members.

And: The death toll in the flooding in the Nepal-Tibet border region in the Himalayas has passed 1,000 people. Thirty Canadians are missing. But at least 300 people have been rescued from hydropower tunnels. And there’s hope that hundreds more could be sheltering there.

Also: Canada’s last captive whales leave for the U.S.. Canada banned whale and dolphin captivity in 2019, but the animals at Marineland in Niagara Falls were allowed to stay. With the park closed, they needed somewhere else to go.

Plus: Germany accuses Russia of attempting an attack at Leipzig airport, grain is moving again at the Port of Churchill, and more.

It’s voting day for three federal byelections in the British Columbia riding of North Vancouver-Capilano, the Ontario riding of Beaches-East York and the Quebec riding of Chicoutimi-Le Fjord.

And: The White House says it’s not a war, but Canadians aren’t taking kindly to the takeover of the name of Lake Ontario.

Also: The search for flood victims in Nepal turns to tunnels under hydro-electric power plants. There’s hope hundreds of workers have taken shelter there and are still alive below.

Plus: U.S.-Iran fighting ramps up again, accused Canadian NATO intern denied bail, coral crisis, and more.

Rescuers in Nepal are drilling and digging through debris as fast as they can. Hundreds of workers are believed to be trapped inside tunnels at five hydro power sites. The number of people killed in last week's flash floods along the border with Tibet has risen to nearly 800, and thousands are still unaccounted for.

Also: The trade war looms large over three federal byelections being held on Monday. Seats are up for grabs in Ontario, B.C. and what's shaping up to be a tight, three way race in Quebec.

And: A new space telescope launched from Florida today. It's being hailed as a giant leap forward in how we search for life beyond our planet. NASA's Nancy Grace Roman Space Telescope will look for cosmic mysteries such as dark matter but also for Earthlike planets that could harbour life. And its relying on some Canadian designed technology to do the job.

Plus: Alberta day celebrations amid separation debate, A disapearing island in B.C., Quebec seniors practicing karate, and more.

Nepal's Foreign Minister says the bodies of hundreds of flood victims have been recovered. But there is not enough space in the country's morgues - so its asking for international help to get freezers to preserve the bodies. Those catastrophic floods have killed more than 670 people in Nepal and Tibet. Nearly 3,000 people are still missing, including 31 Canadians. CBC News is on the ground in Kathmandu with the latest developments.

Also: Spies, as a general rule, don't like to draw attention to themselves. Which is why a conspicuous visit to Moscow this week by the top U.S. spy has set European capitals abuzz. CIA director John Ratcliff delivered a message to members of Russia's security apparatus on Wednesday. The content of that message - and why it needed to be delivered in person - remain a mystery.

And: Donald Trump's order this week to rename Lake Ontario to Lake America is inspiring a wide range of reactions. Everything from anger to eye rolls. The debate over naming, though, is obscuring another issue - the need for Canada and the U.S. to work together in protecting the Great Lakes. The cooperation is ongoing, but some American scientists say the work on their side is being hindered.

Plus: The U.S. and Venezuela's oil deal, Dozens killed in Russia's latest drone strike on Kyiv, and more.