With the release of the second part to Stephen King’s It in cinemas, we look in the history, enjoyment and terror of clowns. From court jesters to serial killers, children’s party entertainment to nightmarish villains, clowns are definitely not for everyone.

Many of these triggers and behaviors are common. Here's why they affect your dreams and how to fix them so you get better sleep.

The tongue-eating louse is the only known example of a parasite replacing an organ of its host.

Experts reveal the most common ways COVID-related stress has disrupted our sleep cycles and how to fix them.