The March for Science phenomenon began in April last year in Washington D.C. before similar marches were held across the globe. Canberra also hosted an event last year.

The event is co-ordinated by volunteers who are either science professionals or passionate about science.

One of the organisers was Sean Geoghegan, the ACT's chief medical physicist, who said the event was to encourage governments to make informed, evidence-based decisions.

"We're keen to create a better country and world based on science," Dr Geoghegan said.

"If you don't make decisions based on scientific evidence you will make a decision that will cause more harm than good."

Dr Geoghegan stressed that while politically interested, the marches were not partisan and welcomed people of any political persuasion.

The event featured four guest speakers and had MLAs Tara Cheyne and Chris Steel in attendance.

There was also an Ask a Scientist stall where people could seek answers to various questions.

The group, which was between 50 and 70 strong, marched along the banks of Lake Burley Griffin shouting chants like “What do we want? Evidence based policy! When do we want it? After peer review!” and the simple yet effective "No science, no beer!"

Many people held signs and placards with pro-science phrases, although the wind did its best to blow those around the place.

Creator of the Fuzzy Logic Science Show Rod Taylor said it was more important than ever to embrace science.

"Australia is running out of water and our lands are being degraded, we have a looming energy crisis and climate change," Mr Taylor said.

"If we don't do the right thing, the future for humanity will be bleak.

"We have no hope without science."