Earth is one special planet. It has liquid water, plate tectonics, and an atmosphere that shelters it from the worst of the sun's rays. ... The fact that Earth hosts not just life, but intelligent life, makes it doubly unique.
Earth is one special planet. It is our home, the third planet from the sun. It has liquid water, plate tectonics, and an atmosphere that shelters it from the worst of the sun’s rays. The fact that Earth hosts not just life, but intelligent life, makes it doubly unique.
