This year saw a steady rise in the readership of our magazine, Science News for Students. We also rolled out more stories than ever before — and on an ever-broader range of research topics. We know that you’ve noticed, and voted with your mouse clicks and phone taps as to which you found most interesting. But we editors sometimes have a different idea of what are the most important stories. Sometimes we recognize ones with the potential to prove game-changers in science and engineering. Other times, stories point to new trends or issues that are poised to affect us or our world. So sit back and review our top 10 hits for 2015. If you haven’t checked them out yet, there’s no time like the present!