Do you know how many different animal species live in the world?

Today is the International Day for Biological Diversity. We know of around 1.5 million named and described species of animals in the world today. Scientists estimate that there may actually be between 3 and 30 million. The animals that we most often pay attention to, such as mammals and birds, are only a small fraction … Continue reading Do you know how many different animal species live in the world?