Edit the following sentence in such a way that it sounds more formal.
People should start thinking more about the environment.
Individuals ought to commence contemplating more profoundly about the preservation of the environment.
Complete the following task based on the instruction and optional input provided.### Instruction:
Edit the following sentence in such a way that it sounds more formal.

### Input:
People should start thinking more about the environment.

### Output:
Individuals ought to commence contemplating more profoundly about the preservation of the environment.