jaybrendansmith
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Thought experiment: If 15,000,000,000 trees die or are cut down every year, and each tree weighs 2000 kg on average, And 30,000,000,000,000 kg of wood rots every year, and each 1 kg of rotting wood creates 1.65 kg of…
- Rolls-Royce and UK Space Agency plan to build nuclear propulsion engines (theguardian.com)