Taiwan

For nearly 200 years, biologists felt they had seen it all when it came to nudibranch species, with only six types identified around the world. Then, scientists in Taiwan chanced upon another, the size of a grain of rice, that no one knew existed.

The 2025 World Happiness Report is out and it's not good news for the US. While the top four happiest countries are no shock – Scandinavia and Iceland – the US is becoming unhappier by the year, slipping to its lowest spot on the table ever.

Many of us have had a tooth pulled in the dentist's chair, and even with anesthetic, it's not pleasant. So spare a thought for the people who, for millennia, chose to have good teeth yanked out with no painkillers – all in the name of beauty (mainly).