The Union of Concerned Scientists puts rigorous, independent science to work to solve our planet's most pressing problems. ucs.orghttps://bsky.app/profile/ucs.orghttps://bsky.app/profile/ucs.org/post/3mksni7dp6s26At a time when good news is harder to find, UCS’s John Rogers brings us four examples of impressive progress in renewable energy, how they came about, and what to watch for next. 🌱⚡Read his blog: https://blog.ucs.org/john-rogers/new-records-set-in-the-renewable-energy-marathon/?utm_source=bluesky&utm_medium=social&utm_campaign=bs01 May 2026 17:25 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mksni7dp6s26https://bsky.app/profile/ucs.org/post/3mksfflj7n223Thank you @astronauts4america.bsky.social for your commitment to science, evidence-based decision-making, public service, and the rule of law. We are with you. https://www.astronautsforamerica.org/01 May 2026 15:00 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mksfflj7n223https://bsky.app/profile/ucs.org/post/3mksbg7effs22Today is the day! [contains quote post or other embedded content]01 May 2026 13:49 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mksbg7effs22https://bsky.app/profile/ucs.org/post/3mks6p346l22aThis Friday, millions of people will take action to protect our rights, our democracy, and our freedom to vote. Be part of it. Find a May Day event near you: https://maydaystrong.org/01 May 2026 13:00 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mks6p346l22ahttps://bsky.app/profile/ucs.org/post/3mkqfp4byn62sWhen devastating weather events make headlines, a question increasingly follows: Did climate change play a role? Where did the emissions driving that risk come from? And what harms result when those risks materialize? Attribution science has emerged to answer precisely these questions. https://blog.ucs.org/delta-merner/the-science-behind-the-headlines-understanding-attribution-science/?utm_source=bluesky&utm_medium=social&utm_campaign=bs30 Apr 2026 20:00 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkqfp4byn62shttps://bsky.app/profile/ucs.org/post/3mkqbz62yq22rWhen 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/UCS30 Apr 2026 18:54 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkqbz62yq22rhttps://bsky.app/profile/ucs.org/post/3mkntozy7r22tToday, the Supreme Court struck down Louisiana’s congressional map and issued a ruling that guts Section 2 of the Voting Rights Act and opens the door for states to enact discriminatory maps. https://www.theguardian.com/us-news/2026/apr/29/supreme-court-louisiana-congressional-map-case-ruling29 Apr 2026 19:32 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkntozy7r22thttps://bsky.app/profile/ucs.org/post/3mknahjgxvk2bHistory shows that a range of sustained, nonviolent mass actions are essential to counter rising authoritarianism, including strikes and economic boycotts. On May 1, millions will rise in solidarity to protect our rights, our democracy, and to put people before profits. Join us: workers.fyi/UCS29 Apr 2026 13:48 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mknahjgxvk2bhttps://bsky.app/profile/ucs.org/post/3mkiss3xi252zThis week, scientists & advocates are meeting in Santa Marta, Colombia, to discuss how the world can transition away from fossil fuels, the primary source of the emissions driving global climate change. On her blog, Dr. Delta Merner outlines a roadmap to ensure this transition leaves no one behind. https://blog.ucs.org/delta-merner/building-a-global-roadmap-to-phase-out-fossil-fuels/?utm_source=bluesky&utm_medium=social&utm_campaign=bs27 Apr 2026 19:33 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkiss3xi252zhttps://bsky.app/profile/ucs.org/post/3mkip5dcfo22hShowing 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.org27 Apr 2026 18:28 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkip5dcfo22hhttps://bsky.app/profile/ucs.org/post/3mkg57jygyc24This weekend news broke that President Trump has fired members of the National Science Board (NSB), which oversees the U.S. National Science Foundation (NSF). This independent governing body has advised U.S. presidents and Congress on scientific policies for more than 75 years.26 Apr 2026 18:01 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkg57jygyc24https://bsky.app/profile/ucs.org/post/3mkfpqaciwt2aToday marks a somber occasion: 40 years since the Chernobyl Unit 4 nuclear power plant disaster.26 Apr 2026 14:00 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkfpqaciwt2ahttps://bsky.app/profile/ucs.org/post/3mkd7aurfqq2jThis year’s corporate annual general meetings are taking place amidst geopolitical conditions that developed long after shareholders were able to submit proposals for meeting agendas. Shareholders, however, are pushing back with lawsuits demanding that companies honor shareholders’ legal rights. https://blog.ucs.org/laura-peterson/investors-move-fight-over-fossil-fuel-dangers-from-the-boardroom-to-the-courtroom/25 Apr 2026 14:00 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkd7aurfqq2jhttps://bsky.app/profile/ucs.org/post/3mkas5baqxz2oWhat exactly is El Niño, and what makes this year’s event “super”? What happens when El Niño interacts with fossil fuel–driven climate change? UCS’s @marc-alessi.bsky.social breaks it all down in his new blog: https://blog.ucs.org/marc-alessi/terrible-team-super-el-nino-and-climate-change-could-lead-to-record-breaking-global-temperatures/?utm_source=bluesky&utm_medium=social&utm_campaign=bs24 Apr 2026 15:00 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mkas5baqxz2ohttps://bsky.app/profile/ucs.org/post/3mk6qrgnjmc2oThis week @joshbecker.bsky.social's bill SB 1282 passes Senate policy committee w/ broad support. #SB1282 creates an opportunity to unlock billions in potential electricity cost savings by harnessing the power of vehicle batteries @casendems.bsky.social let’s continue to move this solution forward! https://sd13.senate.ca.gov/news/press-release/april-22-2026/senate-committee-approves-energy-affordability-and-reliability23 Apr 2026 19:30 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mk6qrgnjmc2ohttps://bsky.app/profile/ucs.org/post/3mk6fueqjxc24Our recent report found that data center growth could leave Louisianans paying for billions of dollars in additional electricity system costs over the next 15 years. Fortunately, there are steps that policymakers & regulators can take to protect Louisianans. Learn more in UCS’s Paul Arbaje’s blog: https://blog.ucs.org/paul-arbaje/policymakers-must-act-to-protect-louisianans-from-billions-in-data-center-driven-costs/?utm_source=bluesky&utm_medium=social&utm_campaign=bs23 Apr 2026 16:15 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mk6fueqjxc24https://bsky.app/profile/ucs.org/post/3mk6axwoq2s2nCheck out this video based on an article UCS Global Security Program Senior Scientist Dylan Spaulding was interviewed for on plutonium pit production issues. You can make a difference: pledge to be a voice for peace and science. [contains quote post or other embedded content]23 Apr 2026 14:47 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mk6axwoq2s2nhttps://bsky.app/profile/ucs.org/post/3mk67kyx6u222The 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/UCS23 Apr 2026 14:22 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mk67kyx6u222https://bsky.app/profile/ucs.org/post/3mk3zysud5c2r1/ Last Friday, the EPA announced its new members of the Science Advisory Board (SAB) - a group whose guidance shapes environmental rules and policy decisions concerning air quality, water pollution, and pesticides. That’s why some of these Trump appointees should give you pause...🧵👇 https://www.epa.gov/newsreleases/administrator-zeldin-announces-selection-members-science-advisory-board22 Apr 2026 17:37 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mk3zysud5c2rhttps://bsky.app/profile/ucs.org/post/3mk3sojptbh2eUCS’s Rachel Cleetus joined @eesionline.org’s podcast, The Climate Conversation, to discuss the risks posed by the upcoming summer months of Danger Season and what lawmakers must do to protect us as climate change intensifies. “We shouldn’t wait for a disaster to strike to act." #EarthDay: https://www.eesi.org/podcasts/view/11.5-dire-destructive-and-deadly-everything-you-need-to-know-about-danger-season22 Apr 2026 15:26 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mk3sojptbh2ehttps://bsky.app/profile/ucs.org/post/3mk3okssdrk2iThis #EarthDay, we’re grateful to NASA and the Artemis II crew for giving us a whole new perspective on our work tackling the world’s most pressing issues.22 Apr 2026 14:13 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mk3okssdrk2ihttps://bsky.app/profile/ucs.org/post/3mjzqjtgjs224UCS’s Vivian Yang’s new blog covers California’s grid operator (CAISO) reforms to the interconnection process and their effectiveness in addressing long wait times. “Now more than ever, it’s critical to clear the bottlenecks and connect clean energy to the grid faster to help decarbonize the state.” https://blog.ucs.org/vivian-yang/can-californias-interconnection-reforms-deliver-a-cleaner-grid/?utm_source=bluesky&utm_medium=social&utm_campaign=bs21 Apr 2026 19:43 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mjzqjtgjs224https://bsky.app/profile/ucs.org/post/3mjz7t6zmvs2d"Will the next surface transportation reauthorization (STR) in Congress keep us stuck in a car-dependent, unaffordable & unsustainable transportation system? Or will legislators step up, shed tired ideas, and support a future of people-oriented and science-based affordable transportation options?" https://blog.ucs.org/kshen/word-on-the-street-what-folks-are-saying-about-transportation-policy/?utm_source=bluesky&utm_medium=social&utm_campaign=bs21 Apr 2026 14:44 +0000at://did:plc:rvuee746th6j5qacfrfc7jed/app.bsky.feed.post/3mjz7t6zmvs2d