Unanswered Questions in Chemistry and Science

How did life begin?
According to scientists, life originates from biological molecules from a primordial soup. However, the questions remain unanswered because so many theories explain life’s origin. People get confused with the origin of DNA and the origin of the first cell that leads to a complete organism.
Where do we put all the carbon?
Recent research shows that carbon is increasing in the atmosphere. However, remedies have been put forward to take back the carbon, but people do not understand how?