Rewrite the following sentence to make it positive: Deforestation is a global environmental crisis.
Efforts towards reforestation worldwide provide hope in combating global environmental challenge.
Complete the following task based on the instruction and optional input provided.### Instruction:
Rewrite the following sentence to make it positive: Deforestation is a global environmental crisis.

### Output:
Efforts towards reforestation worldwide provide hope in combating global environmental challenge.