Michael Miller explains what research shows about laughter, stress and heart health.Noted tech journalist Kevin Roose discusses what he learned about AI in writing his new book on the race to develop "superintelligence., President Donald Trump announced "major combat operations" against Iran on Feb.Picanha, prices and politics: What Brazil's favorite steak says about the election, 23 years after the United States military invaded Iraq, sparking an insurgency and a civil war, the U.S.Trade tensions mean fewer Canadians flocking to South Florida!

Jason Allen has more.has withdrawn all military forces from Iraq., A witness said she was "clearly very alive.Route 1, Maine voters worry about heating oil, gas and Canadian tariffs.Democrat Xavier Becerra and Republican Steve Hilton debated immigration, affordability and more in their televised debate for the California gubernatorial contest.State Department said that Roger Mariaca received "bribes to facilitate drug trafficking and help violent criminals evade justice., Democrat Xavier Becerra and Republican Steve Hilton debated immigration, affordability and more in their televised debate for the California gubernatorial contest.WATCH: Nat Geo catches rare great white shark moment on cameraHis health journey took him to the same hospital where his mom sought treatment for cancer - ringing the bell she never got to..

The Trump administration previously said the legal justification cannot be released due to national security implications.Here's what to know, Justin Tinsley from ESPN's Andscape discusses more about the WNBA Playoffs, including Wilson's viral interaction with a fan.WATCH: Will Reeve shares message of hope after cancer battle.ABC News' Lara Spencer has all the action from the high-octane matchups, including the New York Liberty's ousting of the No.Michael Miller explains what research shows about laughter, stress and heart health., A Kansas patrol officer saw a dog wandering the street with its leash still attached, but no owner in sight.A SpaceX Falcon 9 rocket launched on a mission to the International Space Station from Florida's Cape Canaveral, carrying two NASA astronauts, a Russian cosmonaut and a Canadian astronaut..WATCH: Annual orange car parade grows in popularityAs a Syrian glassmaker created his wares in Damascus, watching his craft reminded this reporter to slow down and enjoy the moment., Recovering man child" shares tips for men to get better at tackling the mental load of parentingAccording to an official briefed on the investigation, the suspect had allegedly been threatening to conduct a mass shooting at the Texas Capitol on Thursday., OpenAI parts ways with 3 researchers it says mishandled sensitive informationWant to find love the old-fashioned way?.

WATCH: Will Reeve shares message of hope after cancer battleAI data centers: How much are ratepayers on the hook for?, In August, prosecutors asked a judge to dismiss Reflecting Pool vandalism charges against David Hearn because the damage had been caused by a contractor's "botched installation.Extreme weather threatens millions from the Great Lakes to the Gulf Coast.Feel free to comment below. Trump renews threat to resume attacks on Iran after U.S.President Donald Trump is holding a campaign rally in the Choctaw Nation of Oklahoma!