This year, humanity landed on its first comet, a child was born to a woman with a transplanted womb, and a fossilized sea shell forced us to reconsider our conceptions of human culture. Those are just a taste of the 20 achievements, innovations, and advances we've selected for our roundup of 2014's biggest scientific breakthroughs.
Drone photography came into its own this year. Quadcopters with cameras got better and cheaper, turning more people into drone hobbyists and professional aerial videographers. Drones were used for cityscapes, nature walks, concerts, real estate listings, disaster surveys, Olympic sports—even self-portraiture, as selfies taken from the air became known as "dronies."