Dr.Butts

Today when Dr. Butts were giving her presentation about climate change and what Dr.Butts studies, I was very interesting when Dr Butts say that earth sea level was very high back then mostly all the earth was covered in water, also Dr.butts mention that sometimes Earth poles could expand to the equator, making that earth a big frozen planet. Dr butts wonder about marine life during those hard times, how do they adapt or  go extinct like brachiopod, that are now replace by clamps. Also in the collection of the Peabody Museum they're about 13 million types of fossils not on display.