A Sound of Thunder by Ray Bradbury

Hook – Grab the reader’s attention
with an interesting statement (of your
own) on the general topic (science
fiction, time travel, etc.).
Your hook should not be in the form of
a question.

In a world where the smallest actions can forever alter the course of history, Ray Bradbury's "A Sound of Thunder" challenges our perceptions of time and the consequences of tampering with it.