5 things for September 5: North Korea, hurricanes, DACA, Myanmar, Alzheimer's

Some Japanese preparing for nuclear attack
Some Japanese preparing for nuclear attack

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    Some Japanese preparing for nuclear attack

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Some Japanese preparing for nuclear attack 02:35

(CNN)The wildfires near Los Angeles are under control, but the threat isn't over. 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. North Korea

North Korea said it successfully tested a hydrogen bomb over the weekend -- its sixth nuclear test and the most powerful weapon the country's ever tested. Reaction around the world was strong: President Trump condemned it, saying the North continues "to be very hostile and dangerous" to the US. The President also threatened any country (that would be China) that trades with North Korea. UN Ambassador Nikki Haley said Kim Jong Un was "begging for war" and urged the UN Security Council for more sanctions.
    South Korea conducted a live-fire military drill in response to the test, using surface-to-surface missiles and fighter jets to hit targets off its own coast. Now, a South Korean lawmaker says the North is moving an intercontinental ballistic missile. US Defense Secretary James Mattis promised a "massive military response" if the North attacked the US or its allies, but military analysts say the US doesn't have a lot of good options when it comes to dealing with the regime.
    South Korean navy stages new live-fire drills
    South Korean navy stages new live-fire drills

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      South Korean navy stages new live-fire drills

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    South Korean navy stages new live-fire drills 01:27

    2. Hurricanes

    Last week it was Harvey; this week it's Irma. Hurricane Irma is a Category 4 storm out in the Atlantic, and it's expected to hit the Caribbean, then perhaps Florida. Puerto Rico could start feeling Irma's effects by the end of today, and the storm could make landfall on Anguilla on Wednesday. It's possible Irma could be on Florida's east coast by the weekend.
    Irma approaches, Florida declares emergency
    Irma approaches, Florida declares emergency

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      Irma approaches, Florida declares emergency

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    Irma approaches, Florida declares emergency 01:10
    Meanwhile, the Gulf Coast is just starting its recovery from Harvey. Floodwaters are receding, so people are returning to their damaged homes and businesses to assess the damage. President Trump made his second visit to areas hit hard by Harvey over the weekend. And there's big concern over 13 toxic waste sites that were flooded by the storm. But there's good news, too. Houston's mayor said most of the city's businesses will reopen today.
    Woman reunites with her rescuer
     hurricane harvey woman reunites with rescuer rosa flores_00010127

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      Woman reunites with her rescuer

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    Woman reunites with her rescuer 02:03

    3. DACA

    President Trump is expected to end the Deferred Action for Childhood Arrivals program as soon as today. The controversial program, started under President Obama, gave qualified applicants, dubbed "Dreamers" -- undocumented immigrants who came to the United States as children -- protection from deportation and the ability to work and study in the US. Trump reportedly plans to put a six-month delay on any DACA action to give Congress time to come up with a fix that would let "Dreamers" stay. Trump vowed during the campaign to dismantle DACA but signaled a softer stance once he took office.
    Trump's twists and turns on DACA
    Trump's twists and turns on DACA

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      Trump's twists and turns on DACA

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    Trump's twists and turns on DACA 01:28

    4. Myanmar

    It's not often you see one Nobel Peace Prize winner go after another, but that's what's going on with Malala Yousafzai and Aung San Suu Kyi. Yousafzai called out Suu Kyi over her failure to condemn the "tragic and shameful treatment" of Myanmar's Rohingya people. Yousafzai, 20, is the youngest Peace Prize winner in history; Suu Kyi is the de facto leader of Myanmar.
    The Rohingya are a stateless, Muslim minority in predominantly Buddhist Myanmar and are considered some of the most persecuted people in the world. Hundreds have died in recent clashes, and more than 73,000 of them have fled the country since the end of last month. 
    Rohingya Muslims flee violence in Myanmar
    rohingyas flee myanmar stout pkg_00031313

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      Rohingya Muslims flee violence in Myanmar

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    Rohingya Muslims flee violence in Myanmar 02:33

    5. Alzheimer's disease

    Scientists may have developed a blood test that can accurately diagnose Alzheimer's disease. A new study in the Proceedings of the National Academy of Sciences details the experimental test, which researchers say helped them ID Alzheimer's patients with up to 86% sensitivity and specificity. Right now, the only way to conclusively diagnose someone with Alzheimer's is after the person has died. But the test will have to be further evaluated, a process that will take years, before it can be used by doctors.
    How to prevent Alzheimer's disease
    How to prevent Alzheimer's disease

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      How to prevent Alzheimer's disease

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    How to prevent Alzheimer's disease 03:33

    BREAKFAST BROWSE

    People are talking about these. Read up. Join in.
    RIP, Walter
    Over the holiday weekend, the music world said good-bye to Walter Becker, one of the geniuses behind the jazzy pop of Steely Dan.
    Great expectations
    Royal watchers are over the moon with the news that Prince William and Kate are expecting baby No. 3.
    William and Kate expecting third child
    William and Kate expecting third child

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      William and Kate expecting third child

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    William and Kate expecting third child 00:48
    The droids you've been looking for
    That cute little BB-8 droid will meet his evil twin when "Star Wars: The Last Jedi" takes over this galaxy in December.
    Scents on a plane
    Fresh-baked bread. Vanilla bean. Lemongrass. The smells from your local farmer's market? Nope, just the scents that will fill your nose on your next first-class flight.
    Ladies of the flies
    Hollywood's about to do an all-girl remake of "Lord of the Flies," and predictably, social media lost its ever-loving mind.

    NUMBER OF THE DAY

    $0
    That's how much newspaper publisher Tronc is spending to buy the New York Daily News

    AND FINALLY ...

    'Become one with the vegetable'
    The "How to Dad" guy teaches us how to get our kids to eat vegetables. Good luck with that. (Click to view)