Since high school, Rachel Ross has been looking up toward the stars to understand how the universe works. She has an undergraduate degree from the University of California Davis and a master's degree in astronomy from James Cook University. Rachel has spent several years making her passion for astronomy and science education into a profession. She has even held the position of Jedi master at an observatory. And no matter what anybody says, the final answer is always 42 and duct tape is useful in all situations.
One of the harshest places on Earth can is the Sahara Desert. The largest hot desert in the world, and the third largest desert behind Antarctica and the Arctic, the Sahara covers nearly all of northern Africa.
Corticosteroids are synthetic drugs that are similar to cortisol, a hormone the body naturally produces. They're used to treat a wide variety of disorders, including asthma, arthritis, skin conditions and autoimmune diseases.