Here is a mystery nobody wants to touch. In a riverbed in Paluxy, Texas, archaeologists have found both dinosaur tracks and human footprints together. Both made at the same time. And, not just one track, but dozens. All the tracks are the same age, about 140 million years old, and they were made together.
A group of scientists has recently made a shocking discovery. They studied a tribe from Melanesia. And they realised that all people belonging to that tribe have genes that are not found in other people.