The Martian of this book refers to an American astronaut accidentally left stranded on Mars while his crew, thinking he had died during an intense windstorm, barely escapes the planet with their lives intact. Mark Watney, the Martian in question, is a wise-cracking botanist-engineer, and astonishingly easy-going, considering he’s left behind on a planet by himself. He can grow things, calculate how many calories he will need until a rescue mission is launched (in four years!), fix broken equipment, and assemble new contraptions from existing parts. It is man versus nature, only Watney has to manufacture all of his oxygen, food, and water himself, and he has to hope nothing catastrophic breaks. Oh yeah, and communication with NASA is a problem because the departing crew took the radio with them. The author, Andy Weir, is a proud geek so every calculation is correct from the number of liters of carbon dioxide that can be converted into oxygen to the amount of fecal material it would take to bring martian soil to life in an effort to grow potatoes that Mark the botanist could conceivably grow.