The Process of Photosynthesis Explained: From Light Absorption to Energy Production & 2026 Breakthroughs (Ultimate Guide) Key Takeaways The overall equation for photosynthesis is 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂ — six molecules of carbon dioxide and six of water become one glucose molecule and six of oxygen, powered entirely by sunlight. Photosynthesis happens in two distinct stages: the light-dependent reactions (which produce ATP and NADPH in the thylakoid membranes) and the light-independent Calvin cycle (which uses those products to fix carbon into sugar in the stroma). Not all plants photosynthesize the same way. C3, C4, and CAM pathways evolved as adaptations to different climates — understanding which pathway a crop uses matters enormously for agriculture in South Asia's variable monsoon conditions. Globally, photosynthesis fixes roughly 120 billion tons of CO₂ per year , making it the planet's primary carbon sink and the foundation of nearly every food web on Earth. Among the biggest photosynthesis breakthroughs 2026 : Stanford's artificial leaf hitting 22.4% solar-to-fuel efficien…
