Defenders of science picked up their protest signs and brushed up on their science puns on Saturday, as March for Science rallies took place in 500 cities internationally. Purposefully coinciding with Earth Day, the objective of the March for Science was to be both a celebration of science and a means to vocalize the need for the government to financially support science research and education.

It was also the perfect opportunity for people to bust out their nerdiest science jokes. In New York, where organizers of the march and police on site say the crowds ranged from 25,000 to 30,000 participants, people mixed pop culture, puns, and carefully picked scientific equations to get their message across. These were some of the best that Inverse saw:

Science keeps life from becoming Oregon Trail.

Phew.

Hot flashes: not the cause of global warming.

Tag team.

A zoological observation:

Just an observation.

If you have to grab something, grab data.

I see what you did there.

This is what is called a fact.

Get the facts. Sarah Sloat

Schröndinger’s cat with a twist:

A twist. Sarah Sloat

Get it? Because chemistry.

Science jokes are good. Sarah Sloat

Carol didn’t wear safety goggles either.

Damn it Carol. Sarah Sloat

K, thanks.

Wonder who she's talking about. Sarah Sloat

He really knew how to lean into his brand.

Stereotypes can be true. Sarah Sloat

Her pipettes are just hers, thank you.

You heard her. Sarah Sloat

Carl Sagan, that is.

Yep. Sarah Sloat

Clever square root call-out:

It's an imaginary unit. Sarah Sloat

Ru Paul and science is a nice combination.

Silence! Sarah Sloat

The important word here is “like.”

It's like magic but not. Sarah Sloat

Timely meme:

(I think those are still science actually). Sarah Sloat

Just making an observation:

Also true. Sarah Sloat

Very hot right now indeed.

So hot right now. Sarah Sloat

Dark but fair:

Fair. Sarah Sloat

The pun game here is on point.

Puns for days. Sarah Sloat

Extra credit for cuteness:

Dynamic duo. Sarah Sloat

Here are David and Liam, a father and son Inverse spoke to before the march. David is a medical technician and Liam’s favorite dinosaur is the Tyrannosaurus rex. David was marching because he’s concerned that federal funding cuts will drastically hurt medical research, and Liam just seems to be really down for science. They were ready to have a great day being a voice for a subject they love, which is really the crux of what the March for Science seemed to be all about.