Life As We Knew It by Susan Beth Pfeffer

Technically a "young adult" series, these novels are some of my absolute favorites. I read them all, in my 40's, and then my teenage daughter read them... and she loved them just as much as I did. Years later, we still talk about them sometimes.

Life As We Knew It, the first in the series, is about 16 year old Miranda, her family, and her life after the world changes forever.

One day an asteroid hits the moon... and knocks it closer to the earth causing all sorts of natural calamities like earthquakes, tsunamis, and violent storms. 

This is the story of how she and her family survive when food becomes scarce due to the climate change, people are terrified and dying, and the world has become a brutal place to survive.

The second novel in the series, The Dead and the Gone, is the story of  Alex Morales and his life and reactions to the same global disaster that Miranda describes in the first novel, but from his completely different perspective, location and family. 

In book three of the series, The World We Live In, Miranda and Alex combine their stories a year after the asteroid hit the moon, and in the final novel, The Shade of the Moon, is the story of the new society created post asteroid.

Fascinating novels. I highly recommend them!