For the Geo Quiz, we are looking for a place where you could find some 3.5 billion-year-old stromatolites.
These are some of Earth's oldest rock formations created back when volcanoes were erupting across the planet and the oceans were hot.
To give you a hint, western Australia is a good place to start looking, near the remote Pilbara region.
Sandstone rocks discovered there about a year ago are believed to contain fossils of the earliest living cells.
Strelley Pool, Australia is the answer to the Geo Quiz.
It is there that the world's oldest fossils were discovered recently.
They are about to go on display at The Houston Museum of Natural Science, which also includes T-Rex and Triceratops skeletons.
Anchor Marco Werman gets details from the museum's curator Robert Bakker.