The Maze Runner by James Dashner

Another dystopian page-turner!  Thomas finds himself delivered via freight elevator to an enclosed compound with no memory except for his name.  He is greeted by other teenage boys to a large area surrounded by stone wall they call the Glade.  Nobody knows why they are there, and for two years they have been searching for a way out.  Doors to the outside open each morning leading to a maze that changes each day.  By nightfall the massive doors shut which keeps the horrible half-slug, half-machine monsters from entering their Glade.  There's much action, much mystery, and a sequel called The Scorch Trials.

Hunger Games by Suzanne Collins

This is the first book of a now-famous trilogy drawing all sorts of attention from young adult readers.
The plot: In a near-future, the United States has been brought to collapse by war and famine. In its place, a country called Panem has united what is left into twelve districts--plus an all-powerful "Capitol." To keep the districts under control, the ruling faction televises yearly Hunger Games where two representatives from each district are thrown into brutal competition. The rest of the oppressed population is expected to watch on televised programming. When the other 23 contestants are dead, the winner returns to the home district bringing wealth and honor.
When her young sister is chosen as a contestant, Katniss volunteers in her place. Thus begins a violent story--full of twists, turns, and fascinating characters.

Unwind by Neal Shusterman

Yikes! In the future, unwanted teenagers can be sent off to be "unwound"--a process in which their body parts are harvested for others in need. Readers of this unnerving book follow doomed unwinds as they try to escape this cruel fate. Could not put this down.

Life as We Knew It by Susan Beth Pfeffer

It's spring in rural Pennsylvania, and we readers become witnesses to a changing world through the journal of high school student, Miranda. The journal begins as the world takes to lawn chairs to watch the predicted collision of a meteor with our moon. It was supposed to be just interesting entertainment in the night sky. Unfortunately, the scientific predictions were a little off. The meteor hits the moon so hard that it's knocked into an orbit much closer to the earth. This brings on a string of disasters which seem to threaten human existence--first tsunamis, then earthquakes, and finally the increased pull of the moon's gravity brings old volcanoes to life. Crops fail as ash from volcanoes blocks out the sun. Miranda's journal follows her family as they struggle with hunger, staying warm without gas and electricity, and dealing with the death of loved ones. Readers will definitely see the gifts of normal everyday life in new light.