How plants turn thin air into your morning bowl of cereal

Nature's smallest factory: The Calvin cycle - Cathy Symington · 5:38 · Video: TED-Ed · Watch at the source

In short: Every bite of food begins with a chemical miracle. This video explores the Calvin cycle, the precise biological machinery that transforms carbon dioxide into the glucose that fuels your life.

While photosynthesis is often simplified as plants making food from light, the Calvin cycle represents the specific second phase of this process. It functions as a microscopic factory, using a series of complex chemical reactions to assemble carbon atoms into sugar molecules.

The process relies on what the video describes as clever mix-and-match math. By capturing carbon dioxide from the atmosphere, plants are able to produce glucose, providing the fundamental energy source for nearly all life on Earth.

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