Considered an invasive species, what has slithered its way into the Everglades ecosystem?

Featured in Monday's episode, which US gymnast won 3 gold medals at the Paris Olympics?

Sparking fears of a larger quake, what country experienced a 7.1 magnitude earthquake on August 8th?

Featured on Tuesday's episode, a Canadian engineer stumbled on a state television feed from what country?

According to recent estimates, how much is a 40 ounce gold bar worth?

European scientists have sent a spacecraft to explore whether the moons of what planet can support life?

Which Olympian is known for his signature glasses and superman-like style?

Facing a health emergency, what infectious disease are African nations planning to begin vaccinating for soon?

Featured in Friday's episode, what country is seeing a railway shutdown from two railroad companies?