On Friday, a leader from North Korea crossed the Korean Demilitarised Zone for the first time ever to talk denuclearisation and long-awaited peace. It was a truly historic moment, but it's only the latest event in a complicated conflict that's lasted nearly 70 years. Here's everything you should know about the Korean War.

American diplomats in China are falling ill with symptoms such as headaches, nausea and hearing loss after hearing "odd sounds" in their apartments. It's an eerily similar situation to what happened in Cuba in 2016 when 24 diplomats complained about strange sounds and nearly identical symptoms. Is sound actually making these people sick? Maybe.

This post is about Kanye West's week of MAGA. Sorry.

You step into a street you thought was empty - then you hear it. A car is careening toward you, tyres squealing as the driver slams on the breaks. You have less than a second to react and save your life. Here's what you do.

There are a lot of gun terms thrown around in the media these days, like "clip," "casings," and "semi-automatic." But if you're not familiar with firearms, many of these terms might go over your head. This glossary of common gun lingo will help clear things up so you can be an informed part of the conversation.

The terrifying story of Southwest Airlines Flight 1380 near-crash is still fresh in flyers' minds, but a commercial jet losing an engine isn't usually something to be afraid of. Not only does it rarely happen, but when it does, pilots and planes are ready to handle it. Here's what you need to know about these types of incidents, and why Flight 1380 was more severe.

Last week, the United States and its allies France and the UK fired 105 missiles - most of them Tomahawks - at Syrian targets in an attempt to prevent future chemical attacks in the Syrian Civil War. But what are the alleged chemical weapons being used? And what exactly do they do to people? Here's what you need to know.

At the tail end of 2017, I had the good fortune to babysit some adorable children for a few hours, during which they proceeded to ask all sorts of (mostly PJ Masks-related) questions. One actual question was: "How does the TV make sound?" As I explained how sound and air interacted, what I really wanted was something tangible I could use to show them exactly how it works - specifically, I wanted this guide on waveforms.

The English language is constantly evolving, with new words and phrases spreading among us like an infection - we hear things, then we say those things. The problem is that we don't always bother to wonder if we should. Because of that, the original meaning of some demeaning and hateful expressions get lost in time. Here are some widely used examples.

The 2018 Winter Olympics have begun and it's time to cheer on our athletes. The trouble is, it's hard to know what the heck's going on in some of these events. Why are there so many people skating at once? What is curling exactly? Is ice dancing the same as figure skating? And, woah, does that lady have a gun?

The world appears to be in a rough place right now. If you turn on the TV or open up your web browser, you're almost guaranteed to be bombarded by bad news. But is the world really doomed? Or is your animal brain playing tricks on you? Chin up -- things aren't always as bad as they seem.

Ever wondered how horses go from being wild, free-spirited animals to people's most faithful travel companion? Grab your lasso, put on your cowboy hat, and get ready to become a horse whisperer. I mean, you'll probably never need to tame your own horse, but if you did, this is how the masters do it.

Yesterday the Bulletin of the Atomic Scientists pushed the Doomsday Clock forward to two minutes from midnight. The last time the Bulletin got this grim was in 1953, after the US and USSR tested their first hydrogen bombs.

The problem with most blockchain "explainers" is that they provide more detail than what matters to most people, using language that is foreign to most people, which winds up leaving people more confused than when they started. Instead, without worrying about being a technically perfect description, here's an explanation of blockchain your parents could understand.

You go to take a step up onto your porch when you realise it's covered in shimmering, slippery ice. Your mind wants to stop so you don't hurt yourself, but your body isn't going to get the message in time. Here's what's going on in that brain of yours.

If you're just getting into wine, you probably hear about processes you're not familiar with, like decanting and aeration. But do you need to bother with that stuff? Fear not, future wine snob this is all you need to know.

Tech professionals gave some quick explainers on tech and business concepts recently, in a Twitter thread started by software exec Anil Dash. Here are the highlights.

I can't help but shake a leg every day and I don't mean dancing. When I sit down or lie down, I feel an uncontrollable urge to move my legs. They bounce for hours on end and most of the time I don't even notice it. When I do, I sometimes try to stop in case it's annoying others around me, but that just makes me feel uncomfortable. I decided to find what's causing all this bothersome bouncing.

You're probably aware that developed nations such as Israel, Russia
and the United States have missile defence systems. But do you know how these systems work? Or how effective they are? They're not the impenetrable shield you think they are.