Support CO2 Free -Forum: Inventions, technology and policies for fighting climate crisis and carbon emissions

There are programs to collect carbon dioxide from exhaust gasses and store these in the ground like in old gas fields. I wonder if there is any risk of leaking the gas to ground. If so the CO2 relased could replace oxygen as material of high density than air, e.g. in a shallow region like in a valley and cause suffocation of people and animals. I think this is known is smaller scale from industrial accidents.

I believe in carbon removal from exaust gas but the storage schemes may need further consideration. CO2 could be also useful raw material for building or like if it could be stablized.