Whatever you had for breakfast today—whether it was cereal and milk, eggs and toast, or pancakes and sausage—you were consuming energy derived from the Sun.
None of the food on Earth would exist without the Sun. Plants take in the Sun’s energy, and then people eat the plants—or they eat the flesh of animals that have eaten plants. One way or another, the Sun’s energy gets into us.
The Sun’s energy gets incorporated into food by a process called photosynthesis. The food’s energy gets transferred into people by a different process called digestion and absorption. Here’s how it all happens.
