Can we use cold to generate electricity?
Why can't we use cold as an energy source to generate something?
Since air-conditioning is a heavy user of energy, can we save energy by constructing a big tube that sucks in cold air from higher up in the sky to cool our ambient temperature somehow? How energy can be created? Why can't we produce oxygen like trees and reduce global warming? Can energy be created? Can we create free energy? Can energy be created in a non-energy environment? If energy never gets lost, why can't we create a machine that works forever? Why cant we produce oxygen like trees and reduce global warming? Why can't we produce oxygen like trees from CO2 and reduce global warming? A cold block of metal feels colder than a block of wood at the same temperature. Why? Why does a freezer make snow? Energy can neither be created nor destroyed! Can this be proved wrong? How do we make free energy? How can we produce electricity from chemical energy? Why doesn't my body generate enough heat? Does cold air kill germs? Why or why not? Why is it essential to use a renewable source of energy? If energy cannot be created. can force be created higher than the energy required? Will there ever be a preferred energy source? Why do we not build supercomputers in cold areas such as above the arctic circle or high altitude regions? Will it not be cheaper to use the already cool environment to cool the computers and avoid energy consuming air conditioning? How would anthropogenic cooling best be achieved, and would that save us from global warming's effects? Given that human beings give off heat and there are so many of us, does this heat affect climate or is it too small? How can you make electrical energy with nuclear energy? Why do we feel that some materials are colder than others? If energy can neither be created nor be destroyed, then who created energy? Does the heat we produce contribute directly to global warming? How does electricity work? Why does it produce heat? During fever, why do we feel cold when our body temperature rises? Why do colds make you tired? What are some examples on how thermal energy is used?