Annihilation is about a sort of Jurassic Park-like area in the corner of the earth, but radically altered nature instead of dinosaurs. Each time people go to check in on it, everyone dies, but always because of killing each other or suicide or something not to do with the area. The book takes places during the 12th expedition into the area.

Children of Time is about a science team that intended to create a second earth and (if I remember correctly) genetically alter monkeys to become intelligent enough to prepare the planet for the human's arrival. But the alteration occurs with a completely different animal, naturally rendering the planet inhospitable... for humans anyway.

'Annihilation' was turned into a shitty movie starring kike Neta-lee Hershlag if that sounds familiar to you.