Julius Caesar used money and war to become the most powerful person in the Roman Republic.
Historians have found tasty new evidence that the people who built Stonehenge supplemented their meat and dairy diets with nut and fruit "energy bars" made with animal fat.
Biological robots made from frog cells can self-replicate like no other organism, by moving around raw materials to build more of themselves.
Some features of the omicron variant's genome hint that it may have evolved in rodents.