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 can’t I drink seawater?

Consider seawater’s awful taste a warning: It contains more salt than your cells and organs can handle. Ocean water is nearly four times saltier than the […]
January 19, 2019

Why are leaves green?

The green color in leaves and blades of grass comes from a pigment called chlorophyll, which absorbs sunlight during photosynthesis, one of the most important natural […]
January 22, 2019

Why do Earthquakes happen?

The ground beneath your feet might feel as solid as a rock, but it’s actually moving every minute of every hour of every day. Earth’s crust […]