THE FOREST OF LIFE. (cover story)

LIFE (Biology); ORGANISMS; EXTRATERRESTRIAL life; LIFE sciences; AMINO acids; ARSENIC; SILICON

The article provides information on the various forms of life that might exist on Earth and what makes them unique from one another and the carbon-based life forms that are already established. The author suggests that alternate forms of life that might be found include those that use alternative amino acids, arsenic organisms and even life forms based on silicon.