What is photosynthesis and why is it important for life on Earth?
The Leaf's Quiet Factory
What is photosynthesis and why is it important for life on Earth?
Right now, all around you, the quietest factory on Earth is humming along — and it has no walls, no smokestacks, and no noise at all. It's a leaf. A plain green leaf is busy turning sunshine into snacks, and almost everything alive depends on it. This is the story of photosynthesis, the trick that keeps the whole party going.
A plant can't go shopping, and it can't pack a lunch. So it makes its own food, out of three free ingredients it gathers without ever leaving home: sunlight pouring down from above, water sipped up through the roots, and carbon dioxide — a gas the plant breathes in from the air. Three plain things, about to become something delicious.
