I’m sending you the story of Dr. James Shannahan, whose Project Hour Glass has overturned his life. Inadvertently, he (your hook starts here--->)has discovered the genetic key to the eventual extinction of the human race and –– horrified by the moral implications of his research –– has fled his powerful employers, HelXlab. Ironically, they believe Shannahan has found the cure for aging and will stop at nothing to find it, and him. (and ends here)
The largest generation on earth is obsessed with their own aging, entranced by the thrills
that embrace science and madness, and eager to invest in the deeply human story of a man who could play God –– and the incredible woman who saves him.
That second paragraph makes me reach for the Zippo. My desire to read pages plummets in direct proportion to how many people you tell me are "eager to read" or in this case "invest" in your novel. If you take away nothing else from this little 600+megawatt crapstravaganza, remember this: people read novels because they like the characters or the story. People do NOT read novels about issues. That is an ironclad rule. You will apply this rule by never ever ever writing anything that resembles paragraph two again.
Go back to your novel. Fill in the XYZ with the elements from your story. Then hone it so it becomes your own.
X is the main guy; he wants to do:
Y is the bad guy; he wants to do:
they meet at Z and all L breaks loose.
If they don't resolve Q, then R starts and if they do it's L squared.