A human (also called a human being or person) is a member of the species Homo sapiens, which means 'wise man' in Latin. 

 

Humans are social animals. They usually live in groups. They help and protect each other. They care for their children. Humans are bipedal, which means they walk on two legs. Humans have a very complex brain, which is much larger than that of the other living apes. They use language, make ideas, and feel emotions. This brain, and the fact that arms are not needed for walking, lets humans use tools. Humans use tools far more than any other species.

 

There are humans living on every known habitable planet.

 

As of 2107, there are an estimated over 93 billion humans living with most of that number living on Mars and Earth.