This Saturday's March for Science is inherently connected to the April 29 People's Climate March, climate scientists and environmentalists say: one march is about listening to science, the other is about acting on it.

The March for Science, taking place on Earth Day, will march in defense of truth and scientific fact. A week later, these values will manifest at the People's Climate March where movements for climate, jobs and justice will put forward a vision to build bold solutions that tackle climate change, create and retain fair jobs, and bring forth justice truly for all.

"The Science March is about respecting science, the People's Climate March is about acting on it," said Ploy Achakulwisut, PhD Candidate in Atmospheric Science at Harvard University.

"Science has helped us understand the climate crisis, now we need to demand political action to help solve it. The March for Science calls for science-based policymaking, and the People's Climate March puts this value into practice by opposing Trump's reckless anti-climate agenda, defending the integrity of climate science and democracy, and standing up for justice."

The March for Science and People's Climate March will bring the fight for truth and justice right to the doorstep of the Trump administration. The week of action, dubbed "From Truth to Justice: Earth Day to May Day 2017," will see more than 50 events, including: climate education opportunities and the launch of visionary legislation, youth speak-outs and convergences, direct actions and more.

A series of climate education videos have been developed for use during the "Truth to Justice" week of action. The videos feature 350.org co-founder Bill McKibben, actor and activist Maggie Gyllenhaal, renowned climate scientist James Hansen, longtime head of the EPA Environmental Justice program Mustafa Ali, and top atmospheric scientist Katharine Hayhoe.

Many of the organizers and participants of the March for Science have backgrounds in climate science, and many have been advocating for bold climate action well before the election of Donald Trump.

"The March for Science and the People's Climate March go hand-in-hand," said MIT and Harvard renewable energy modeler Dr. Geoffrey Supran.

"Because attacks on science don't just hurt scientists, they hurt scientists' ability to protect the people, and climate change epitomizes that. When politicians cater to fossil fuel interests by denying the basic realities of climate science and pursuing anti-science climate policy, they endanger the jobs, justice, and livelihoods of ordinary people everywhere. The People's Climate March is about scientists and citizens uniting to protect the people and places we love by demanding that evidence, not ideology, inform policy."