do too. -- Kris Naudus, Buyer's Guide Editor

The Calculating Stars / The Fated Sky (Mary Robinette Kowal)

The Calculating Stars, Mary Robinette Kowal's fiction debut, is an extraordinary and inspiring tale of one woman's nigh unstoppable quest to achieve her goal of becoming an astronaut -- patriarchal politics and social conventions be damned. Winner of the 2018 Nebulus, 2019 Locus and 2019 Hugo awards for best novel, The Calculating Stars and its newly released sequel, The Fated Sky, will make the perfect gift for any STEM- and space-obsessed teen or adult on your list. -- A.T.

Super Pumped: The Battle for Uber (Mike Isaac)

The game-changing transformation of a legacy industry. The pomp and downfall of a billionaire founder. The behind-the-scenes misdeeds and eight-figure party expenditures. Uber embodies much of theform of How to Invent Everything, by Ryan North. This "survival guide for the stranded time traveler" is chock-full of helpful tips and tricks to make the most of one's life should they accidentally jump the wrong direction in time, sideswipe a dinosaur and irreparably break their machine's flux capacitor. -- A.T.

The Bastard Brigade (Sam Kean)

This year, for once, you can get a great gift for the World War II buff on your list without having to endlessly trawl eBay for 80-year-old knickknacks. The Bastard Brigade by Sam Kean recounts the Allies' desperate struggle to keep Nazi Germany and the rest of the Axis powers from developing and deploying a nuclear bomb. From the opening days of the war to the final march on Berlin, Kean's vivid storytelling