In 2015, Lida Xing was visiting a market in northern Myanmar when a salesman brought out a piece of amber about the size of a pink rubber eraser. Inside, he could see a couple of ancient ants and a fuzzy brown tuft that the salesman said was a plant.
As soon as Xing saw it, he knew it wasn't a plant. It was the delicate, feathered tail of a tiny dinosaur.
To Donald Trump, one of President Obama's major failings was his refusal to identify "radical Islam" specifically as America's top adversary.
"Anyone who cannot name our enemy is not fit to lead this country," Trump told a crowd in Ohio in August. "Anyone who cannot condemn the hatred, oppression and violence of radical Islam lacks the moral clarity to serve as our president."