I spent the day protesting at the March for Science rally in downtown Denver to draw attention to the political attacks on science. In doing so, I was privileged to join some incredibly creative, passionate, smart and remarkably funny people. March for Science rally draws thousands .

Marchs were held around the country and around the world. Here are some links to other stories: Washington Post– Here are some of the best signs from the March for Science in DC , New York Times — Scientists, Feeling Under Seige, March Against Trump Policies , and the BBC — March for Science: Rallies Worldwide to Protest Against Interference .

I snapped some photos of some of the signs I saw, but there so many people I couldn’t get them all.

For some, you have to be a science geek to get them:

“How do you expect me to live long and prosper under these conditions?”

“Peer review matters!”

“In Peer Review We Trust”

[Peer review is what happens when you send your scientific theory out into the world. Other scientists read it and try to tear it to shreds. They question your hypothesis, your assumptions, your data, your methods, your conclusions. If your theory holds up against these assaults, then, and only then, can it take its place in the scientific canon as a working theory. And only until something better comes along.]

“Climate change denial is √-1” [the square root of -1 is an irrational number].

“Small p-values, not small mindedness.” [small p-values indicate that the evidence against the null, or current, hypothisis is strong, which is a good thing because it suggests that your alternative hypothesis is correct.]

Others are more universal:

“Science is not an alternative fact.”

“Got smallpox? Me neither. Thank science.”

“The facts don’t change just because you don’t like them.”

There were a lot of these: “I’m here thanks to science — cancer survivor/diabetes survivor/amputee.”

“Scientists are often wrong — but science isn’t for long.”

“I am what a scientist looks like.”

“Science Made America Great!”

“Make Science Great Again!”

“The white coats are coming! The white coats are coming!”

“I thought there would be pi.”

My favorite, though, was one held by a young minority girl: “Forget Princess! I want to be a scientist!”

So remember to make like a proton and always be positive!