January 19, 2019

Why is it easier to float in the ocean than in a swimming pool?

All that dissolves salt makes seawater more dense (or heavier) than freshwater – and objects float more easily in dense water  The saltwater of the ocean […]
January 19, 2019

Why is the ocean salty?

The next time you sputter after accidentally swallowing seawater at the beach, consider this: That bitter liquid around you once washed the land. Each drop of […]
January 19, 2019

How do plants eat meat?

Evolution has armed carnivorous plants with a wild and variety of traps for capturing, killing, and devouring dinner. Consider the pitcher plants, whose leaves are disguised […]
January 19, 2019

Why do some plants eat meat?

All plants soak up energy from the sun and slurp nutrients from the dirt. But hundreds of species have developed an ability to add to their […]