Summer Match
Help us fight back against the all-out assault on science & scientists.

2024 Year in Review
During this truly extraordinary year, we have been busier than ever.

2025 Impact Report

We are fighting back against the flood of anti-climate and anti-science actions.

Protecting the Scientific Endeavor

Science Under Siege

The Climate Science Legal Defense Fund has fought for the scientific endeavor since 2011. Our initiatives ensure that scientists can conduct, publish, and discuss their research and advocate for science without the threat of political harassment, censorship, or legal intimidation.

2025 Impact Report

We are fighting back against the flood of anti-climate and anti-science actions.

Climate Litigation Toolkit

Our free legal resources explain the best practices for safely and effectively engaging in climate litigation and other scientific consulting work.

Updated Report: Open Records Laws

These laws, while critical to government transparency, are frequently misused by groups seeking to harass scientists and slow or halt the scientific endeavor. This report can help scientists and attorneys respond to such inquiries.

Political Action Toolkit

Our free legal resources explain the best practices for safely and effectively engaging in political advocacy.

Join Our Mailing List

Our Work

We provide free legal aid and resources to researchers, educate the scientific community about their rights and responsibilities, and strengthen legal protections to promote scientific integrity.

Silencing Science Tracker

The Silencing Science Tracker is a public database that tracks government efforts to restrict, censor, undermine, and misrepresent science since the November 2016 election. To date, we have documented more than 600 attacks on science. We catalog government efforts to restrict, censor, undermine, and misrepresent science.

Safeguarding Scientific Integrity

We promote scientific integrity reforms to ensure the best available research and data inform government decision-making. And we publish resources to advance understanding of how research institutions and federal agencies approach scientific integrity — and how to strengthen legal protections for science and scientists.

Latest Resources and Activities

Scientists: Know Your Rights

The legal risks for any individual scientist are small, but there are actions you can take to protect and defend yourself, especially if you’re involved in scientific advocacy and activism.

Our Expertise in the News

Press | News Review: A Billion Butterflies by Jagadish Shukla
October 29, 2025 Hindustan Times

So widespread has been the harassment against scientists that an organisation was set up to counter it: the Climate Science Legal Defense Fund.
Press | News Scientists strive to be apolitical, but they can’t keep politics out of their labs
September 14, 2025 LA Times

One needs a scorecard to track the devastation wreaked on scientific efforts by the current administration. As it happens, one exists: the Silencing Science Tracker, co-managed by CSLDF and the Sabin Center for Climate Change Law.
Press | News Podcast: Trump gets rude awakening as organization fights back
September 8, 2025 Meidas Touch Network

Lauren Kurtz (CSLDF) joins Court Accountability Action’s Lisa Graves to talk about CSLDF’s work to protect scientists against all kinds of attacks, how their work has changed since the first Trump administration, and just how difficult it has become in the second.

Take a Stand for Science

Your support helps us fight for scientists and defend scientific integrity.

Donate Today

Double Your Impact
Make a year-end donation during our matching challenge and help us raise $20,00 to protect science.

Summer MatchHelp us fight back against the all-out assault on science & scientists.

2024 Year in ReviewDuring this truly extraordinary year, we have been busier than ever.

2025 Impact Report

We are fighting back against the flood of anti-climate and anti-science actions.

Protecting the Scientific Endeavor

Science Under Siege

The Climate Science Legal Defense Fund has fought for the scientific endeavor since 2011. Our initiatives ensure that scientists can conduct, publish, and discuss their research and advocate for science without the threat of political harassment, censorship, or legal intimidation.

2025 Impact Report

We are fighting back against the flood of anti-climate and anti-science actions.

Climate Litigation Toolkit

Our free legal resources explain the best practices for safely and effectively engaging in climate litigation and other scientific consulting work.

Updated Report: Open Records Laws

These laws, while critical to government transparency, are frequently misused by groups seeking to harass scientists and slow or halt the scientific endeavor. This report can help scientists and attorneys respond to such inquiries.

Political Action Toolkit

Our free legal resources explain the best practices for safely and effectively engaging in political advocacy.

Join Our Mailing List

Our Work

We provide free legal aid and resources to researchers, educate the scientific community about their rights and responsibilities, and strengthen legal protections to promote scientific integrity.

Silencing Science Tracker

Safeguarding Scientific Integrity

Latest Resources and Activities

Scientists: Know Your Rights

The legal risks for any individual scientist are small, but there are actions you can take to protect and defend yourself, especially if you’re involved in scientific advocacy and activism.

Our Expertise in the News

Take a Stand for Science

Double Your ImpactMake a year-end donation during our matching challenge and help us raise $20,00 to protect science.

Summer Match
Help us fight back against the all-out assault on science & scientists.

2024 Year in Review
During this truly extraordinary year, we have been busier than ever.

Double Your Impact
Make a year-end donation during our matching challenge and help us raise $20,00 to protect science.