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people who study the human body

People are curious. They wonder, they observe, they study, and they learn. One of their favorite subjects is living things. Biology is the study of living things. And one of the favorite subjects of biologists is the human body. Scientists examine dead bodies to see what is inside. Studying the body... read more

how we use plants

Humans use plants in many ways. We build structures with them. We plant them in and around our homes to enjoy their colors, forms, and fragrance. We study them to learn from them. We eat them and use them to make food products and drinks. We even make our clothes from their fibers. Some of them provi... read more

teeth and venom

A fearsome part of every snake is its teeth. Here’s the lowdown on those serpentine pearly whites… ... read more

the environment in danger

Everything on Earth is connected in some way. Changes on land can affect the air. Changes in the air can affect the water. Damage to one thing always affects something else. It is easy to damage the Earth. Our planet’s population continues to grow. More people means we need to produce more food and ... read more

why are circles 360 degrees and not a round number

Circles have 360 degrees due to the Sumerians’ observations of the Sun’s motion across the sky. ... read more