Which raises the question: What _was_ the most significant scientific discovery during the Obama era? Can we even quantify it yet?
CRISPR is a good example of a discovery that has just come into the public consciousness in recent years, but history for that dates back 20 years!
LIGO & Higgs boson too, decades upon decades of research have gone into these.
the rest (crispr, higgs, deep learning) are not even american, let alone obama-age