I am having trouble understanding one of the comments made by my supervisor on the latest draft of our scientific paper. She commented on the **first sentence** of the draft (Introduction section), she said that the sentence is **hanging**.

Here is my sentence:

*Crowd tragedies continue to take lives all over the world.*

btw. She has highlighted the word **continue** for some reason.

I really want to get this sentence right for the next draft to keep my supervisor motivated for working on the rest of the paper.

I would appreciate any help for **improving the sentence** or **understanding the term 'hanging sentence'**.

PS : I googled the term, but all I could find was some information related to [**dangling modifier**][1]. But I am not sure if my sentence falls into this category.

  [1]: https://en.wikipedia.org/wiki/Dangling_modifier