Amusing concept, it doesn't really go anywhere but it's a fun short story if you like 50's fiction.
Have you seen that movie The Fog? Yes, so has the kid that wrote this. A bunch of kids who end every sentence with "dude" find themselves alone at some kind of camp with a dangerous fog surrounding them.
Aside from the fact that the plot is lifted directly from a well known movie this book is awful. I'm guessing the author is about 17 so I'm trying not to be too harsh but honestly, think about the stories you wrote when you were 17 - would you publish them? Even for free? The writing is just terrible with the focus jumping around in a distracting way.
If that wasn't enough there are 'sexual situations' which will make your toes curl so badly you'll have to be fitted for special shoes. The only people likely to wring any enjoyment from this one are young teens but the book is aimed at adults.
In the future science has banished war and there's enough food to support everyone. As a result the world is intolerably overpopulated. Clearly a harsh solution is in the offing but unfortunately it's so improbable that it waters the story down a lot. Still worth a read though, the way the dissenters are represented by the media and the methods of public coercion may feel disturbingly familiar to the modern reader.
This story is rushed and you get the feeling the author would rather have been writing about life on the river than flying saucers because the sci-fi element is minimal and presented with no enthusiasm at all.