What have chemists done to people conserve energy?

Different innovations in chemistry have brought energy-efficient technologies. This includes: lithium-ion batteries in devices, electric cars, insulation in buildings, lightweight plastic packaging that save fuels at the time of transport. Clearly, chemistry contributes significant energy savings across different industries/markets or even across the globe.

They include lobsters and crabs

Yes he thought they should be left to chance why, because he thought that was the best thing to do