In many ways, 2015 was a sad year for people in many parts the world. Ask the refugees from Syria or Iraq who gave up everything to ferry their friends and family to relatively safer places. Natural calamities like drought and flood also took their toll.
But as they say, travesty often brings the best out in innovators. Scientists from all over the world ensured that for what its worth, 2015 will at least be remembered as a great year for science. Here's a video by NowThis that lists out some of the biggest scientific achievements from 2015.
Hope 2016 has a lot to offer as well.