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This drone is made to fight skyscraper fires
It has a maximum flight altitude of 600 meters, and can carry up to 150 liters of firefighting foams and 6 fire extinguisher bombs in a single trip.
These stairs can become an elevator to help the disabled
The novel 2-in-1 solution doesn't require extra space and is equally useful for pedestrians and wheelchair users.
Using missile launchers to fight skyscraper fires
Each rocket is designed to break through windows to get inside the building and disperse fire extinguishing agents to suppress the fire...
This small hydropower plant works even in slow water currents
The plant is able to convert over 50% of the available energy in water currents as slow as 2 mph, and could thus be used in almost any river, canal, or ocean cu...
These damless hydropower plants don’t harm the environment
Compared with a solar panel array of equivalent capacity, this dam will generate 8 times more energy using only 6% of the space.