Which scientific 'fact' from school do you secretly still believe, even though it's been debunked?

Despite neuroscientists shouting from the rooftops that we use virtually all of our brain, this one keeps showing up in self-help books and Hollywood films. Be honest, part of you still thinks you've got untapped potential up there.

The 2006 demotion still stings for anyone who learned the planets with a catchy mnemonic. No matter what the International Astronomical Union says, Pluto will always be a planet in our hearts.

That neat little diagram showing sweet at the tip and bitter at the back? Complete nonsense, based on a mistranslated German paper from 1901. Yet most of us still picture it when sipping a cuppa.

Goldfish can actually remember things for months and even be trained to do tricks. We've been using this excuse for our own forgetfulness for far too long.

Tall buildings like the Shard get struck multiple times a year, and the Empire State Building gets hit roughly 25 times annually. A comforting saying, but utter rubbish.