What are the similarities and differences between the Global Health and Planetary Health sciences?

1) WATCH THE The Promise of Planetary Health (10 minutes; Apr 22, 2021) – https://www.youtube.com/watch?v=9cZ0zBSJz_g;

2) WRITE A 3-paragraph ESSAY (~500 words) THAT ANSWERS THE QUESTION – What are the similarities and differences between the Global Health and Planetary Health sciences?

You can also use the web to answer the essay prompt.