Meet Jonathan: The 194-Year-Old Tortoise Teaching Us How to Live Longer

Scientists have studied the DNA of the world’s oldest land animal to find out how he stays so healthy after nearly two centuries.

There is a giant tortoise named Jonathan living on a small island called Saint Helena. He is 194 years old. That makes him the oldest land animal in the world. Because Jonathan has lived for so long, scientists are very interested in him. They recently looked at his DNA to see how his body works. DNA is the set of instructions inside every living thing that tells your body how to grow and stay healthy. The researchers wanted to know why he has lived so much longer than other animals. They found some interesting things about how his cells repair themselves. His body seems to be very good at…