Trees as solar panels

The chain starts innocently: he asks ChatGPT to explain photosynthesis step by step ▸ 6:12, then asks the crazy question he likes asking, if the energy is stored in sugar, could you run a computer on sugar ▸ 9:33? The answer is yes in principle: sugar holds chemical energy, biofuel cells use enzymes to crack glucose and release electrons into a circuit ▸ 10:34, today small and weak, good for a sensor, not a laptop.

The numbers are what make it dizzying. A big tree produces 10 to 50 kg of glucose a day at summer peak, a hectare of forest 10 to 20 tons ▸ 15:00, and a US house needs about 30 kWh a day, which at perfect conversion is 6.8 kg of glucose ▸ 19:53. Meaning, at the ideal, a single tree could power a home ▸ 20:40. Julia adds the market correction that keeps it honest: the plant needs that sugar for itself, so you’d have to incentivize it to overproduce ▸ 17:54.

el árbol ya es la batería más eficiente; falta el enchufe →

The insight underneath the sci-fi is real: a tree is negative emissions, it eats the CO2 that kills and exhales the oxygen that gives life ▸ 22:41, unlike a solar panel that costs mined elements and dies in 30 years ▸ 21:29. So he chases the naming: not solar punk, since that still means panels, but a world plugged into trees, and the model offers Biopunk ▸ 33:22, then digs up a precedent he’d never heard of, Karel Čapek’s The Absolute at Large ▸ 42:45. His honest verdict: fumado, descabellado, and “al final le suena como la solución de todos los problemas” ▸ 31:47, until Julia deflates it exactly right, the computers would still be built and discarded; a capitalist world isn’t interested in the tree that ends the problem ▸ 33:56…