Here is an original Popular Mechanics title:
>Will NASA's Next Super Telescope Finally Find Alien Life?
What HN just posted when I submitted that:
>Will NASA's Next Super Telescope Find Alien Life?
Usually any paper or study or article that uses the phrase "World's First" is automatically edited by HN to "First"— "World's" seems to be anathema.
You are a conscientious poster with good instincts. You should consider the change as merely a suggestion, and change it back if you think it makes things better. It is not a final decision.