Describes the RNA World hypothesis and how RNA could be responsible for the start of life on Earth (2:58).
Reviews metabolic pathways and nucleic acids.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Astrobiologists have a variety of ways to look for life elsewhere in the universe.
Learn what happens to the human body when it experiences mild, moderate and severe dehydration.