Here are some of the most interesting science news stories I read this week:
Size and memory both matter in quantum computing
NASA embraces 3D printing with rocket engine injector
Why do we enjoy listening to sad music?
Mammals can "choose" sex of offspring, Stanford study finds
3D-printed splint saves infant's life
Researchers perform DNA computation in living cells
Research reveals Earth's core affects length of day
Impossible material made by Uppsala University researchers
New evidence for warm-blooded dinosaurs
Scientists silence extra chromosome in Down syndrome cells
Computer about as smart as a 4-year-old
Researchers step closer to custom-building new blood vessels
Enjoy your weekend, everyone, and I'll be back Monday as part of the Blogger Book Fair!