The gas was passed through a microwave discharge that broke it into carbon and hydrogen.

When it is mixed with sugar, it turns it into carbon.

The stars have turned a lot of the hydrogen into helium, carbon and other heavy elements.

It did: the helium began to break down into carbon.

Were it possible to do the heating in the absence of oxygen, sugar decomposes into carbon and water.

All of the purchases for offsets are invested into carbon offset projects.

The best chemical transformation to explain this question is diamond into carbon.

The remainder has to be going into carbon sinks.

The star is now burning helium into carbon in its core.

When its reaches 100 million K, helium begins to fuse into carbon and oxygen.