The Alien Planet
They found a new planet not far away from earth and when they landed on it, they found alien beings with large head, big eyes and small body.
Old world meets new world
Large and deep sinkhole appears out of nowhere in Antarctica. When they dig up some more they found mysterious object from previous civilization that someday lived on earth before us.
The Poles Shift
Sometime in 22nd century poles shift occurs and half of earth is flooded. Then come carnivore aliens to eat us but soon some other race contact us to help us.