(CNN)New research suggests the cognitive effects of marijuana use, though significant, may not persist for very long in young people. Here’s what else you need to know to Get Up to Speed and Out the Door. (You can also get “5 Things You Need to Know Today” delivered to your inbox daily. Sign up here.)

1. President TrumpPresident Trump thinks he can do great things in a meeting with North Korean leader Kim Jong Un. But he’s also more than willing to walk away. Speaking at Mar-a-Lago with Japanese Prime Minister Shinzo Abe, the President said that if talks with Kim aren’t “fruitful, I will respectfully leave the meeting.” Abe during the visit reminded Trump about past US failures in North Korean interactions.Trump: Denuclearization tremendous for worldTrump: Denuclearization tremendous for worldTrump: Denuclearization tremendous for worldJUST WATCHEDTrump: Denuclearization tremendous for worldReplayMore Videos …MUST WATCH

Trump: Denuclearization tremendous for world 01:06Meantime, Trump downplayed talk he’s getting ready to fire special counsel Robert Mueller or Deputy Attorney General Rod Rosenstein; “They’re still here,” he said. When questions turned to Russia, he used his go-to phrase — “no collusion” — FIVE times. Speaking of Russia, senior administration officials told CNN the President personally made the decision to dump the plan to hit the Russians with more sanctions after the Syria chemical weapons attack. Trump also is facing backlash for using the word “breeding” when discussing cities that don’t cooperate with the feds to deport undocumented immigrants.Panelist: Trump's 'breeding' tweet is racistPanelist: Trump's 'breeding' tweet is racistPanelist: Trump's 'breeding' tweet is racistJUST WATCHEDPanelist: Trump’s ‘breeding’ tweet is racistReplayMore Videos …MUST WATCH

Panelist: Trump’s ‘breeding’ tweet is racist 01:052. Puerto Rico blackoutRead MorePuerto Rico just can’t catch a break. Almost the entire island is in the dark this morning, after a crew removing a fallen tower got too close to an energized line, causing it to fail and, in the process, knock out power across the grid. Only a fraction of residents have regained power so far. This is the second blackout in two weeks caused by the same subcontractor, so the island’s governor wants its public power agency to cancel its contract. Huge swaths of Puerto Rico have been without power since Hurricane Maria destroyed its electrical grid last fall, making that the second-longest blackout in history.3. CubaThe man likely to become Cuba’s next President may not carry the Castro name, but he’ll uphold the Castro ideology. Cuban First Vice President Miguel Diaz-Canel was nominated by the country’s National Assembly to replace Raul Castro as the island nation’s leader. He’s a 57-year-old technocrat who said he believes “in continuity,” dashing the hopes of those wishing that a change in leadership could lead to reforms. And Raul Castro is still expected to exercise a large measure of control over the Cuban government.The challenges facing Cuba's likely new leaderThe challenges facing Cuba's likely new leaderThe challenges facing Cuba's likely new leaderJUST WATCHEDThe challenges facing Cuba’s likely new leaderReplayMore Videos …MUST WATCH

The challenges facing Cuba’s likely new leader 02:384. SyriaChemical weapons experts still haven’t been able to get into Douma, the site of a suspected gas attack on civilians. The latest delay was caused by gunfire on a UN security team. It’s not clear now when the team of experts from the Organization for the Prohibition of Chemical Weapons will be allowed into the city. And that’s concerning because there’s fear all the physical evidence of an attack might be gone by the time a team gets in. About 75 people were killed in the attack, for which Syria and Russia were blamed. The US, UK and France retaliated last week with missile strikes.An American ISIS widow looks for a way homeAn American ISIS widow looks for a way homeAn American ISIS widow looks for a way homeJUST WATCHEDAn American ISIS widow looks for a way homeReplayMore Videos …MUST WATCH

An American ISIS widow looks for a way home 05:105. Airline safetyAs investigators piece together what happened to the engine on a terrifying Southwest Airlines flight that turned fatal, the flying public has to be asking: What about the thousands of other jet engines in service right now? The Southwest jet engine showed signs of “metal fatigue,” and this type of thing has happened before on at least one other Southwest flight. So, the airline’s going to start doing intensive inspections of its planes’ engines. The FAA last night said it would issue a directive requiring inspections of certain kinds of plane engines.Passenger: I tried and tried to pull woman inPassenger: I tried and tried to pull woman inPassenger: I tried and tried to pull woman inJUST WATCHEDPassenger: I tried and tried to pull woman inReplayMore Videos …MUST WATCH

Passenger: I tried and tried to pull woman in 01:11Editor’s note: We’re grateful to our readers who are aviation experts and who pointed out a line in yesterday’s newsletter that implied the pilot regained control of the plane only after it dropped from about 30,000 feet to 10,000 feet. It’s standard procedure in an emergency to descend to 10,000 feet, which is what the pilot, who’s being praised for her “nerves of steel,” did.Pilot praised for her handling of emergencyPilot praised for her handling of emergencyPilot praised for her handling of emergencyJUST WATCHEDPilot praised for her handling of emergencyReplayMore Videos …MUST WATCH

Pilot praised for her handling of emergency 02:41BREAKFAST BROWSESuper SpielbergLooks like Steven Spielberg is joining the superhero craze. He’s getting involved in “Blackhawk,” from the DC Universe.Welcome to WakandaSaudi Arabia ended it’s 35-year ban on movie theaters with a screening of “Black Panther.”Kids see themselves in 'Black Panther' heroesKids see themselves in 'Black Panther' heroesKids see themselves in 'Black Panther' heroesJUST WATCHEDKids see themselves in ‘Black Panther’ heroesReplayMore Videos …MUST WATCH

Kids see themselves in ‘Black Panther’ heroes 01:50Remember me?He needed a kidney and made a desperate plea. Thankfully, a classmate he hadn’t seen in five decades answered the call.Reboots roll onFirst, it was “Total Request Live.” Now, MTV’s bringing back “YO! MTV Raps” for the Migos generation.Tips wantedThat “Three Billboards” movie was inspired by an actual cold case, and police just doubled the reward in the real-life mystery.Tumbleweed troubleLiving the California lifestyle is awesome — until giant tumbleweeds roll into town and darn near take over.HAPPENING LATERPrince death investigationA Minnesota prosecutor will announce today whether anyone will be charged in pop legend’s April 2016 death.Prince: The EndPrince: The EndPrince: The EndJUST WATCHEDPrince: The EndReplayMore Videos …MUST WATCH

Prince: The End 01:03TODAY’S NUMBER100 millionThe number of Amazon Prime members, revealed for the first time by CEO Jeff Bezos in a letter to shareholdersIs Amazon a monopoly?Is Amazon a monopoly?Is Amazon a monopoly?JUST WATCHEDIs Amazon a monopoly?ReplayMore Videos …MUST WATCH

Is Amazon a monopoly? 04:14TODAY’S QUOTE”This action goes against our very foundation.”Air National Guard Director Lt. Gen. Scott Rice, after three members of the Tennessee Air National Guard were fired or demoted after one used a dinosaur puppet while taking the reenlistment oathAND FINALLYWhat’s Michael Scott’s superpower?Someone with a little (too much) time on his hands mashed up the intro from “The Office” with scenes from “The Avengers” movies. (Click to view.)

Source Link: