To provide an apparatus capable of reducing harmful gases existing in the atmosphere.

The apparatus for removing harmful gases from the atmosphere consists of a platform which is designed to be operated autonomously in the earth's atmosphere and has a housing of a lightweight structure provided with an inlet for sucking the surrounding atmosphere and an outlet for discharging treated products. Various units for extraction and separation of gases and those for storage and treatment of liquid and gaseous products are arranged inside the housing. The energy required to operate an individual unit of cryogenic circulation loops is generated from a solar cell.