Check out these remarkably similar book covers for Frozen by Melissa De la Cruz and Michael Johnston and Adaptation by Malinda Lo:

Book cover courtesy of Syndetics Book cover courtesy of Syndetics
Frozen: “More than a century after a catastrophic disaster wiped out most of humanity and covered much of the earth with ice, fifteen-year-old Cass yields to the voice in her head urging her to embark on a dangerous journey across a poisoned sea to the mythical land, Blue.”

Adaptation: “In the aftermath of a series of plane crashes caused by birds, seventeen-year-old Reese and her debate-team partner, David, receive medical treatment at a secret government facility and become tangled in a conspiracy that is, according to Reese’s friend, Julian, connected with aliens and UFOs.”

Descriptions from library catalogue.