More than 1,000 types of bananas exist, split into 50 categories — from tiny red finger bananas to massive green plantains. They’re not all yellow, and many aren’t sweet.

People who stay slim while eating freely often have a slow metabolism, not a fast one. Less muscle mass lowers their basal metabolic rate (BMR), meaning they burn fewer calories at rest than those with more muscle

The phrase 'pull out all the stops' comes from pipe organs, usually in churches, where pulling out stops increases airflow and volume. It now means making a full effort.

In the 1800s, an estimated 90% of ketchups contained harmful ingredients, some even deadly. Heinz used clear bottles to prove his was pure, made only from the finest ingredients, and cornered the market.

A study by the University of Leicester found that cows produce 3% more milk when they listen to classical music throughout the day.

Siblings can get different DNA ancestry results (for example, 30% Irish for one and 50% for another), due to genetic recombination, which also explains why they may look so different.

The reason we feel groggy when we wake up is that blood flow first reaches the 'primitive brain centres.' It takes 15 minutes or more for blood to return to the areas responsible for deeper thinking.