Every living creature on Earth is designed, more or less, by four basic nucleic acids. These acids combined in various sequences and strands form our DNA, which dictates everything about us from our daily physiology to our biological rhythms, commonly referred to as our biological clocks. This clock controls when we’re active, when we eat, how we age, and so on. So here’s the big question, could we someday alter our biological clocks? Listen to the latest Question Your World Radio Report from the Science Museum of Virginia.