The Plateau - Voices of the Earth by Maureen Dudley

What if you have a half a second to stop the extinction of the human race? What if that pivotal day to save humanity depends on you saving your own life? Catherine's life and humanity's continued existence depend on her ability and willingness to believe in an altered, future timeline with a colony of Earth inhabitants. It couldn't come at a worse time. Catherine's father dies unexpectedly. The pressure of her research and advocacy work adds dead weight to her life's precarious tipping points. Catherine's losing battles includes sleep deprivation. Sleep eludes her, because when it does come, she finds herself repeatedly dreaming about standing on the same high plateau with her greyhound dog, Addy, surrounded by plants and animals and insects, and then poof! The living landscape transforms into ash.