Meh. The biosphere, being generous and giving it 10 km depth and 10 km height (ocean trench, mountain peaks), is 20 km worth of skin on a 12 700 km diameter sph

Meh. The biosphere, being generous and giving it 10 km depth and 10 km height (ocean trench, mountain peaks), is 20 km worth of skin on a 12 700 km diameter sphere. Less than an oily smear on a marble. "Saving the planet" is laughable, the planet could hiccup and wipe out all life and keep going as before ... ("Don't antropomorphize Nature, she hates that.")