Here's why thousands of scientists are (and aren't) marching on Saturday

Scientists and science fans around the world will take to the streets on Saturday in a show of support for facts and reason. 
And like the myriad reasons people go into the sciences themselves, marchers planning to head to the main March for Science event in Washington, D.C. or satellite marches around the world have a wide number of reasons for getting involved.
SEE ALSO: Science is already political. Get over it and start marching.
The march, which is unprecedented in modern U.S. history, was triggered by the Trump administration's frontal assault on everything from actual facts to funding for climate, health and energy research. But more broadly, there is a sense in the U.S. and elsewhere that science's central role in society is in jeopardy. Actual facts are giving way to, well, "alternative facts."  Read more... More about Environmental Protection Agency , Health , Neil Degrasse Tyson , Bill Nye , and Diversity