The number of glaciers in the national park in the U.S. has been reduced in many years.
About 25,000 snow geese died after they landed on contaminated water in an open pit in Montana.
The environment watchdogs sniff invasive mussels to prevent them from spreading in the waters of Montana.
Paleontologists discovered T.rex fossils, which is about 66 million years old and was delivered to Burke Museum.
