Eve's Planet — Nina M. Osier

A remote and deadly world holds Captain Maisie Thurlow's children hostage, and she's determined to set them free. The apparently “Earth type” atmosphere of Eve's Planet drives Humans born elsewhere mad, but its Human natives must remain there or die. Or at least, that's how it was 12 years ago when a rescue ship took Maisie, her husband, and the rest of the planet's colony of shipwreck survivors back to civilization, but could do nothing for their offspring except leave them behind. Maisie is on her way back now, with her old team reassembled and a group of eager young scientists along to solve the mystery. She doesn't know that she may be racing against time, as rapid climate change alters conditions on Eve's Planet so much that it may soon become impossible for Humans -- Captain Thurlow's family included -- to go on living there.