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Posts by Union of Concerned Scientists

This is one of dozens of examples of political officials censoring federal scientists and controlling the scientific information that’s communicated publicly from US health agencies. RFK Jr. is betraying his agency’s mission and putting all of us in danger.

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Bhattacharya delayed the report over his disagreements with the report’s method, despite that method’s robust history. Instead, he’s advocating for a method being used in a US-funded study that’s been paused pending an ethical review because it doesn’t adequately meet the standard of “do no harm.”

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CDC delays publishing report showing covid vaccine benefits The acting CDC director cited concerns with the methodology, but the design has long been used to test vaccine effectiveness.

At the same time, acting CDC Director Bhattacharya delayed a scientific report on vaccines. The report, which should have been published weeks ago, shows that COVID vaccines greatly reduced the chance of ER and hospital visits last year.

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With New Charter, Kennedy Redesigns Vaccine Committee and May Sidestep Court Ruling

This week, HHS published a new charter, changing the standards for members’ expertise and even re-defining “expertise” in ways that favor anti-vaxx activists. Kennedy is rewriting the rules to make it easier to continue his anti-science overhaul of vaccine policy.

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‘A Mass Disaster Nonstop’: Inside the Turmoil at Robert F. Kennedy Jr.’s C.D.C. Forty-three current and former C.D.C. employees on the changes they say are replacing science with ideology — and making Americans more vulnerable.

Recently, a court ruled that the new member composition of ACIP did not meet requirements set by law: many new members lack “meaningful expertise in vaccines.” Technical committees like ACIP need objective experts to help inform public health policy & keep everyone safe from preventable illnesses.

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‘A Mass Disaster Nonstop’: Inside the Turmoil at Robert F. Kennedy Jr.’s C.D.C. Forty-three current and former C.D.C. employees on the changes they say are replacing science with ideology — and making Americans more vulnerable.

Over the last yr, Sec Kennedy has repeatedly attacked CDC’s Advisory Committee on Immunization Practices (ACIP)—before he stacked the committee with anti-vaxx conflicts of interest. The committee’s new anti-science recommendations have caused delays in vaccine releases & confusion around access.

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The Trump Administration’s Assault on Vaccines Endangers Us All Vaccines are very safe and help protect us. Why does this administration keep interfering with them?

It’s been a hard week for evidence-informed vaccine policies. Two recent, alarming actions from HHS & CDC advance fringe anti-vaxx positions at the expense of public health. These decisions add to a long string of anti-science actions at US health agencies since Jan 2025. 🧵👇

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According to the Climate Prediction Center, there's about a 40% chance of a "strong" or "very strong" El Nino at the end of this year...

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Trifold poster sits on a table. The title reads "Who's responsible for climate change?" The Union of Concerned Scientists logo is in the upper left corner. Below the title are three text boxes superimposed over an image of a fire burning a building. Below the text boxes is a timeline. In front of the poster sits a collection of several books and handouts. Visible are "The Climate Book" by Greta Thunberg, "The Serviceberry" by Robin Wall Kimmerer, and "Miseducation" by Katie Worth.

Trifold poster sits on a table. The title reads "Who's responsible for climate change?" The Union of Concerned Scientists logo is in the upper left corner. Below the title are three text boxes superimposed over an image of a fire burning a building. Below the text boxes is a timeline. In front of the poster sits a collection of several books and handouts. Visible are "The Climate Book" by Greta Thunberg, "The Serviceberry" by Robin Wall Kimmerer, and "Miseducation" by Katie Worth.

New @ucs.org public library displays for Earth Month 🌎highlighting the outsized role of fossil fuels companies in causing the climate crisis, and the need for #ClimateAccountability

Check out the poster and recommended reading list for adults & kids: www.ucs.org/resources/in...

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How can you know who to trust and how to prepare when it comes to extreme weather?

Join fellow survivors and trusted experts like @zoyamiddleton.bsky.social and
@rothschildmd.bsky.social as we break down the science of extreme weather and get your ?s answered.

RSVP at bit.ly/survivorsforchange

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Contact | U.S. Representative Scott Franklin I value all feedback from constituents. Our office is here to serve you. Please find below the best ways to contact our office for specific requests. Newsletter Signup — Subscribe to receive email updates on our work in...

There is a bipartisan bill in Congress that could protect NOAA’s GOMO program. Please let Reps Amo (AmoOffice@mail.house.gov) and Franklin (franklin.house.gov/contact/) know that you appreciate this—especially if you’re a constituent.

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Why Climate Scientists Are Sounding the Alarm on the Ocean Circulation System AMOC The potential collapse of one powerful ocean system--and indicators of its likelihood--are raising alarms among climate scientists.

For more information on what the AMOC is, what’s causing its collapse, and what could happen to the Earth’s weather patterns if it does collapse, check out @marc-alessi.bsky.social blog on the AMOC circulation:

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Effects of a weakened AMOC would spread worldwide. E.g., accelerated sea level rise on the E. US coast & changing monsoon patterns in the tropics—with vast human impacts. This is not something to take our eyes off, no matter how much the Trump admin & its fossil-fueled agenda want us to look away.

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The study used data made possible by NOAA’s Global Ocean Monitoring and Observing (GOMO) program, which faced large threatened cuts under the President’s budget last year. Congress kept the program intact, but the threats of cuts continue.

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Meridionally consistent decline in the observed western boundary contribution to the Atlantic Meridional Overturning Circulation Western boundary observations in the Atlantic suggest a meridionally consistent decline in the ocean overturning circulation.

A new study released in @science.org found that the AMOC is weakening due to fossil fuel-caused climate change, according to mooring observations in the Atlantic Ocean.

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"Visual of the AMOC, which is an ocean circulation that transports warm, fresh water from the Equator to the North Atlantic and cold, salty water from the North Atlantic to the Equatorial region."

"Visual of the AMOC, which is an ocean circulation that transports warm, fresh water from the Equator to the North Atlantic and cold, salty water from the North Atlantic to the Equatorial region."

New science is out on one of Earth's critical "tipping points": the potential collapse of the Atlantic Meridional Overturning Circulation (AMOC), which brings warm Gulf Stream water toward Europe and helps make the mild climate of northern Europe possible. (🧵⬇️)

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Transit Privatization Is a Bad Idea. Here’s Why. The clearest way to improve transit across the country is for the public to invest in it

"We already have a very privatized transportation system—an expensive, privately-funded system of car ownership that is to blame for transportation being the US’s second-highest household expense, costing households over $13,000 per year.

Public transit ensures we have another option..."

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Californians Are Changing How They Drive—and It’s Paying Off Over the last 4 years, gasoline sales in California have dropped by over 180 million gallons per year.

UCS's Dave Reichmuth explains EVs, efficiency, and alternatives to driving are saving Californians money—a lot of it.

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1. Last month was the hottest March on record for the contiguous US with alarmingly high temperatures across a large swath of the country that would have been nearly impossible without human-caused climate change.

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DHS secretary calls for US states to lead disaster response instead of Fema Markwayne Mullin visits Asheville to survey Hurricane Helene recovery in first big trip since Kristi Noem’s ouster

DHS Sec Mullin's 1st official trip to check on Hurricane Helene recovery in North Carolina made it clear he’ll continue President Trump's destructive agenda to restructure FEMA including continuing to place the burden of disaster response & recovery onto states and local gov’s. bit.ly/4tuWhvp

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Graphic with a quote of Julian Reyes, Chief of Staff at UCS. The graphic includes the image of Smokey the Bear: “My own experience as a civil servant at USDA working directly with Forest Service R&D scientists tells me this relocation is bad for the American people, bad for American producers and foresters, and bad for rural communities.

Graphic with a quote of Julian Reyes, Chief of Staff at UCS. The graphic includes the image of Smokey the Bear: “My own experience as a civil servant at USDA working directly with Forest Service R&D scientists tells me this relocation is bad for the American people, bad for American producers and foresters, and bad for rural communities.

In his blog, UCS’s Julian Reyes explains how Forest Service restructuring is irreversibly damaging the federal scientific enterprise. It leaves the nation facing growing climate threats with fewer experts to manage wildfires just as risks are surging across the US.

🔗 act.ucsusa.org/4sqD11s

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To all public health workers out there, thank you! We see you, we appreciate you, and we need you, now more than ever! 💙

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Welcome! You are invited to join a webinar: Webinar: Public Health’s Role in Fighting Authoritarianism. After registering, you will receive a confirmation email about joining the webinar. Join us during National Public Health Week to learn about the basics of authoritarianism, how it intersects with our experiences in public health, what we can do about it, and how to participate in up...

Authoritarianism – which is on the rise in the US– threatens scientific progress and harms public health. Register for this free webinar on April 9 to learn about the role of public health in defeating authoritarianism.

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Happy Public Health Week We're off this week!

This week we celebrate the folks who work to improve the health of populations through education, research, and hands-on service. Sometimes their work is hidden, since our public health infrastructure serves as an invisible shield against threats like infectious disease and unsafe environments.

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We (Still) Have the Science on Cumulative Impacts That’s why we need cumulative impacts policies, which require the evaluation of multiple stressors and burdens so the decisions that get made are more comprehensive, effective, and equitable.

Despite pressure from politicians and powerful industries, the science of public health continues to advance and offer us evidence-based solutions.

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It's National Public Health Week! Riddle us this, Nerdies! What is crucial for the well-being of everyone but is all but invisible when it’s working effectively? Public Health, of course!

Public health work improves the health of communities and populations through education, policy, research, and prevention. It moves us toward a more just and equitable quality of life by reducing barriers and improving access to health care and health-promoting activities.

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It’s National Public Health Week, and this year’s theme is Ready. Set. Action! Check out these resources from @apha.org with ways to celebrate, elevate, and contribute your work!

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Climate Change Is a Significant Driver of More Dangerous Wildfire Seasons Meanwhile, the Trump administration dismantles response agencies and politicizes disaster aid.

Last week’s monthly wildland fire outlook shows that the US wildfire season is already off to an above-normal start. UCS’s Rachel Cleetus breaks down the risks and impacts of climate change-driven heat across the country, pointing to the lack of policy response from the Trump administration.

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Statement by Dr. Tara Drozdenko, director of the Global Security Program at UCS". “Threats of indiscriminate violence are unacceptable, whether they come from nuclear or conventional weapons,” said Dr. Drozdenko. “As scientists, as members of our communities, and as Americans, we must join together to express our collective outrage and demand our elected officials step in to constrain the dangerous and illegal actions of the Trump administration.”

Statement by Dr. Tara Drozdenko, director of the Global Security Program at UCS". “Threats of indiscriminate violence are unacceptable, whether they come from nuclear or conventional weapons,” said Dr. Drozdenko. “As scientists, as members of our communities, and as Americans, we must join together to express our collective outrage and demand our elected officials step in to constrain the dangerous and illegal actions of the Trump administration.”

President Trump’s & his administration’s escalating threats against Iran, including alluding to first-use of nuclear weapons, have reached a breaking point. To ensure the safety of the US & the world, Congress must act today to prevent further escalation of this conflict.

🔗 act.ucsusa.org/4ctMd06

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‘A surrender to special interests’: alarm as Utah shields fossil-fuel companies New legislation comes amid push from big oil, as critics warn polluters’ profits prioritized over Americans’ health

“This is a surrender to wealthy special interests and an affront to the public good. Utah’s new law prioritizes profits for the biggest polluters over communities already suffering from climate impacts and constituents should be outraged.” - UCS' Dr. Delta Merner.

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