Origin(s) of Life
What were environmental conditions at the origin of life on earth?

Did life on Earth start in an organic soup of molecules at the planet's surface or perhaps at the bottom of the ocean in a hydrothermal vent setting? What kinds of pressures and temperatures effected the chemical reactions that led to the development of life? What minerals were available to the earliest biochemical reactions? Determining the context of the origin(s) of life is a necessary step in understanding life in the universe.