
A single cumulus cloud weighs roughly 500 tonnes, about the mass of 100 elephants, and it floats because the warm air holding those water droplets is still less dense than the cooler, heavier air pressing up beneath it.
A fair-weather cumulus cloud weighs about 500 tonnes — roughly the mass of 100 elephants — yet stays airborne because the warm air holding its microscopic droplets is less dense than the cooler air beneath it.



