Union of Concerned Scientists

2/ Warehouses handling the goods we buy attract fossil fuel pollution! Here’s how the Clean Deliveries Act can protect the air New Yorkers breathe.

5/ Warehouses and electric trucks work together! Warehouses with rooftop solar and charging stations keep electric trucks moving. Intelligent Labor and Moving, a company based in Arlington, MA, is the living proof:

4/ Did you know the technology exists to move goods around the country without fossil fuels? Here’s how electric trucks and vans can help reduce pollution in the freight system:

🔋🚗 Over a million EVs are already on the road—and counting. That increase will create a demand for more battery materials. Recycling older batteries from retired EVs could meet a good amount of that new demand, and doing so will mean less mining, which is a win for communities and the environment.

🚌 Transportation in the US has historically been a bipartisan issue, but not under the second Trump administration. Steven Higashide, director of our Clean Transportation program, explains how Transportation Secretary Sean Duffy is weaponizing the department to advance Trump’s authoritarian agenda.

When millions move together, change happens. Tomorrow, in events across the country, millions will rise to protect our rights, our democracy, and to move the country toward a better future. Be part of it: : workers.fyi/UCS

Showing up matters. We were there at No Kings. Now it's time to show up at the next major solidarity event this Friday: The May Day National Day of Action. Find a local event or activity near you: maydaystrong.org

The system isn’t working. The response is collective action. When millions act together, we can create change, together. For our families. For our communities. For our democracy. Pledge to take action this #MayDay: workers.fyi/UCS

You make a mess, you clean it up, right? The fossil fuel industry thinks that rule shouldn't apply to them. Now, federal lawmakers introduced legislation to block communities pursuing accountability for the climate deception and damages fossil fuel products have caused. 🧵⬇️ #MakePollutersPay

HHS Secretary Kennedy’s testimony to Congress today made clear yet again that he is unfit to lead HHS—and his anti-science policies are putting people in danger. ⬇️🧵 @mikethompson.house.gov laid it bare. WATCH:

Big Oil companies are going all-out to avoid taking responsibility for the harm caused to communities and for driving the climate crisis. They are using an age-old strategy: delay, distort, and deny. But we won’t let them off the hook.

Our movement is growing. Our power is collective. Our resistance is nonviolent. March 28 is our next nationwide mobilization against authoritarianism. We have the power and we're claiming it TOGETHER. NO THRONES. NO CROWNS. #NOKINGS2026 🔗 www.mobilize.us?tag_ids=2958...

Members of Congress are currently discussing renewal of the Surface Transportation Reauthorization (STR), a bill that will impact the options we have for getting around, our future climate, air quality & even our wallets. Join us in calling for a better transportation future: act.ucsusa.org/4uUEIXl

UCS' @carlonimbus.bsky.social provides the latest on the Trump Administration's dismantlement of NCAR, and how we can use our voices to save it, together. Learn more: act.ucsusa.org/3Pk1He5

"A summer-like heat wave… in March? 🌡️📈 As we watch record-shattering temperatures hit the Western US for this time of year, UCS's @marc-alessi.bsky.social explains the direct relationship between these extreme heat events and fossil-fueled climate change."

"My fellow scientists, we have an assignment: we must take collective action to hold Congress and this administration accountable. It is time to channel that evidence-based outrage into action,” said @gretchentg.bsky.social at Saturday’s @standupforscience.bsky.social rally in DC. #StandUpForScience

Today marks UCS’s 57th anniversary, and our President @gretchentg.bsky.social’s message feels more resonant than ever, given our long history of challenging the misuse of science and technology for military and war purposes.

3/ Yarrow Axford, PhD in Climate Change and Arctic Science, shared three examples of how the Trump administration is targeting scientists, especially LGBTQ+ people and people of color, slashing science jobs and gutting federal science agencies putting workers and communities at risk.

2/ Abigail Rivera Seda, a PhD student at Tufts University in molecular microbiology, shared how research on C. difficile, a pathogen that threatens our health care system, has been halted putting public health at risk and potentially endangering lives.

The Trump administration plans to dismantle NSF’s National Center for Atmospheric Research, potentially closing its main lab in Boulder. UCS's @carlonimbus.bsky.social explains how NCAR keeps us safe and how you can help protect it. Take action: act.ucsusa.org/4ceWei9

🚜💧Las regiones agrícolas de California enfrentan inseguridad hídrica, calor extremo e inundaciones, entre muchos otros desafíos. Las soluciones basadas en la naturaleza ofrecen un enfoque eficaz para abordar estos retos.

Data centers could be raising your utility bills—and putting your health at risk—to keep up with their hunger for power. Data centers are gobbling up entire cities' worth of energy, and too often, they're turning to toxic fossil fuels for power. (🧵⬇️)

Recently, we joined our partners at @nationalwildlife.bsky.social, Save the Sound , and @sierraclub.org to check out the South Fork Wind Farm, which generated 1,000+ new jobs, powers 70,000 homes annually, and eliminates the equivalent of 60,000 cars' worth of CO2 emissions EACH year.

Today, Administrator Zeldin took a chainsaw to the Endangerment Finding, undoing this long-standing, science-based finding on bogus grounds at the expense of our health.

What’s an indirect source of pollution? Facilities like ports, warehouses, and rail yards that attract air pollution through the operation of trucks, vans, and cargo equipment. We have tools to protect our communities by focusing on these pollution hot-spots. Learn more: act.ucsusa.org/45X8TSR

💰🚗For more than a half century, fuel efficiency standards have saved US drivers money. How much money? TRILLIONS. Fuel efficient vehicles mean less expensive trips to the gas pump and more money for education, for family outings, for groceries. (🧵👇)

🚍🌍 UCS is keeping an eye on the Surface Transportation Reauthorization(STR) because it shapes how the US moves—and who benefits. For decades, highway projects have divided and polluted communities. It’s time for a better approach. Learn more in our recent blog: act.ucsusa.org/45fndps

The authoritarian, violent, and anti-science actions of the Trump admin over the past week show clear contempt for democracy and the public good, endangering people in the US and around the world. Congress must uphold its constitutional responsibility and hold the administration accountable.

What’s the relationship between winter weather & climate change? It starts with the polar vortex. UCS's @marc-alessi.bsky.social breaks it down for you. This holiday season, show some love to your local meteorologists and support science and scientific funding.

The Trump admin intends to dismantle the National Science Foundation National Center for Atmospheric Research (NCAR), one of the US' leading weather and climate research institutions. We must urge Congress to halt this dangerous action immediately. 🔗Take action: act.ucsusa.org/4oWtCwz

The Trump administration has given free rein to some of the most polluting industries in the country. We created an interactive map showing 546 industrial sites across the US and Puerto Rico deemed eligible for exemptions from their Clean Air Act requirements. #DirtyDeeds (🧵)