Some deserts are among the planet's last remaining areas of total wilderness. Yet more than one billion people, one-sixth of the Earth's population, actually live in desert regions. Deserts cover ...
"Even if a planet ... desert planets in so-called habitable zones around their stars — where scientists predict extraterrestrial species could have evolved because it isn't too hot nor too cold ...
the fourth planet from the sun could have been mistaken for Earth’s smaller twin, with liquid water on its surface—and maybe even life. Now, the world is a cold, barren desert with few signs ...