Will-o'-the-wisp

Imagine walking through a dark, misty swamp at night. Suddenly, you see a little light bobbing ahead, like a tiny lantern! This is called a will-o'-the-wisp.

In old stories, people thought these lights were mischievous fairies or ghosts trying to lead travelers astray, or sometimes even show them the way. They're often seen in wet, boggy places where the ground is squishy and full of decaying plants.

Scientists have a more down-to-earth idea about these glowing lights. They think it's actually a natural gas that comes from plants and leaves rotting in the swamp. When this gas mixes with the air, it can sometimes glow! It's like a tiny, natural light show happening right before your eyes. So, while they look magical, they're really a cool science trick from nature.

People have seen these strange lights for a very long time, and they have lots of different names! In England, they might be called a 'jack-o'-lantern' or a 'hinkypunk'. In Germany, they're 'Irrlicht', which means 'wandering light'.

Even in places far away, like Thailand, people tell stories about glowing lights over rivers. It shows that these mysterious lights have captured imaginations everywhere!

The most famous thing about will-o'-the-wisps is how they trick people. They flicker and dance, looking like a lamp you could follow. But if you try to get closer, the light might just disappear or move further away, leading you deeper into the swamp! It's like a game of tag with a ghost light. That's why people were always warned not to follow them too closely.