Is it possible to boil water (change the state of water from liquid to gas) at room temperature?

Yes, it is possible, by decreasing the ambient pressure.

Because the boiling point of liquids can be reduced by reducing the ambient pressure and vice versa.

As ambient pressure decreases, molecules evaporating from a boiling liquid meet less resistance from air molecules and enter the air more easily.

Hence, it is possible to convert water to steam at room temperature and keep water in the liquid state even when the temperature is above 100֯ C, just by altering the ambient pressure.

As cooling continued, dissolving in ocean water removed most CO2 from the atmosphere.

Hydrogen and helium are expected to continually escape (even to the present day) due to atmospheric escape.