Pi (π) Irrational number, decimal representation goes on forever without repeating. • Early approximations by ancient civilizations like Babylonians & Egyptians. • Greek mathematician Archimedes credited with first theoretical calculation ~250BC. #PiDay Learn: en.wikipedia.org/wiki/Pi

Birds • Birds are among the most visible elements of biodiversity in the marine environment. • By tracking bird populations, scientists can better understand the state and health of marine ecosystems. Learn, respect, protect nature and the environment. #Ecosystems #Biodiversity #SeaBirds NOAA

After decades of steep declines, North America’s birds disappearing faster than ever. • Populations shrinking across most of continent. • Intensive agriculture largest role in accelerating losses. • Impacts wildlife, #ecosystems, human well-being. #Birds More: news.mongabay.com/short-articl...

2️⃣ While the study in @pnas.org shows most of the coastline remains stable (for now), in three decades the ice sheet has retreated from the grounding line (where continental ice meets the ocean) at an average rate of 442 sqkm per year, mostly in West Antarctica. ▶️ www.pnas.org/doi/10.1073/...

The intense upwelling of the last few weeks has collapsed as trade winds failed again. One possible reason is the Bermuda high is weak and positioned east than is needed to drive the pressure gradient that sets up wind-jet upwelling in the Gulf of Panama, although this idea needs further exploration

Intensifying Nor’easter Brings Blizzards to East Coast Bomb Cyclone of nor’easter delivers strong winds, multiple inches snowfall to Northeast US, blizzard warnings along East Coast. #Blizzard, #BombCyclone, #Nor’easter Feb 23, 2026 UTC CSU/CIRA&NOAA More: satlib.cira.colostate.edu/event/major-...

It's not as if the Mail and other legacy media have disappeared. X, Meta, Substack etc - a new generation of bigoted billionaire channels - have not replaced the old but are laid on top of it. What we see is that with such tools in their hands, the oligarchs can fool most people, most of the time.

Record Temperature Years: 2025, 2024, and 2023 • Three warmest years in NASA's 146-year record. • Anomalies relative to pre-industrial 1850-1900. Morphs data grid to bar chart. NASA SVS Visualizer: Mark SubbaRao (NASA/GSFC) Scientist: Gavin Schmidt (NASA/GSFC GISS) MORE: svs.gsfc.nasa.gov/5607/

Greenhouse gas concentrations keep rising. The planet keeps warming in response. And that added heat shows up in the extremes and impacts. This is really basic stuff. Data from gml.noaa.gov/ccgg/trends/

While it might have rained last weekend that didn't stop our amazing volunteers! 20 total volunteers joined us to pull ivy and Himalayan blackberry in Forest Park, helping to protect our local ecosystem from these invasive plants. Join us on the trails: forestparkconservancy.org/get-involved...

Massive Crack in Ice Forms on Lake Erie Large crack in the ice forms on Lake Erie Sunday, Feb. 8, 2026. Approximately 80 miles long, stretching from Port Burwell, Canada, to near Cleveland, Ohio. #LakeErie #GOESEast #GOES19 CSU/CIRA&NOAA Learn More: satlib.cira.colostate.edu/weather_medi...

Johnna Timms, the Director of Education Initiatives in Kotek’s office, told Oregon’s Senate education committee Tuesday that as of last Friday, 99% of Oregon school districts have policies in place.

Doomsday Clock 2026 "The current autocratic trend impedes international cooperation, reduces accountability, and acts as a threat accelerant..." • Nuclear Risk. • Climate Change / #ClimateEmergency. • Biological Threats. • Disruptive Technologies. Full Statement: thebulletin.org/doomsday-clo...

Polar Bear Population Arctic’s apex predator and its status across the #Arctic. "If we fail to reduce our emissions, by 2100 we may lose all but a few high-Arctic subpopulations in & around the Last Ice Area." 1/3 #PolarBear #SeaIce WWF Arctic LEARN MORE: www.arcticwwf.org/wildlife/pol...

It’s #cleanairnight Sadly many people have wood burners and don’t know the risks. The tiny particulates are very damaging to health. (I got rid of mine several years ago after reading about the dangers.) I often smell smoke in the air on a still night in West Worthing @mumsforlungs.bsky.social

Accelerating Ice Flow Velocities Satellite data captures extent and speed of ice moving off the ice sheets of Greenland and Antarctica into the sea, essential for measuring effects of climate and predicting sea-level rise. 1/2 #Greenland #Antarctic ESA Full Story: www.esa.int/Applications...

In a sane world, this would be front page news everywhere. But it will hardly be covered anywhere. The North Pacific Ocean surface warmed over twice as much over the past 15 years than it did over the preceding 156 years. That's an increase in warming rate of >2000%!

Breathing in air pollution from wood burning increases your risk of heart and lung disease, asthma, diabetes and dementia. Even homes with newer “Ecodesign” wood burners are three times more polluted than those without. This #CleanAirNight, share the facts about wood burning.

Arctic Sea Ice Year-End 2025 • Daily Arctic Sea Ice, Two Years • December 27, 2023 — December 31, 2025 See Chart and details in post below. #Arctic #SeaIce #dataviz Datasets courtesy of NASA/GSFC & JAXA NASA SVS Learn More: svs.gsfc.nasa.gov/5046/

Daily Global Atmospheric Carbon Dioxide (CO₂) December 31, 2025: 426.90 ppm Four Atmospheric Baseline Observatories: Barrow, Alaska -🟦 Mauna Loa, Hawaii -🟥 American Samoa -🟩 South Pole, Antarctica -🟨 Black Lines: Trends & Seasonal Cycles. #CO2 #CarbonDioxide More: gml.noaa.gov/ccgg/trends/...

As we put the final period on 2025, it is virtually certain to rank among the 3 warmest years on record globally (following 2024 as the warmest & 2023 at #2) Here’s a quick look back at some of the weather extremes that this heat -- driven in part by climate change -- helped shape over the past 365

A Gigaton is a billion tons. Or 1000000000000 kg or 2204622621848.78 lbs More than 100 of those lost from Antarctic and Greenland land ice (not sea ice, which is different) each and every year in recent decades. That's the part not replaced by snowfall that helps drive up sea levels.

Arctic Sea Ice Extent at Record Low Levels • November 2025, 2nd lowest monthly mean extent on record, 11.7% less than normal. • Dec 23, 2025, #Arctic #SeaIce extent lowest observed for time of year. European Union, Copernicus Climate Change Service Learn More: www.copernicus.eu/en/media/ima...

Antarctic and Greenland Ice Sheet Mass Losses Average Mass Loss 2002–2025: • Antarctica -135 Gigatons ice/year, global sea level rise 0.4mm/yr. • Greenland -264 Gigatons ice/year, global sea level rise 0.8mm/yr. #Antarctic #Greenland #IceSheet NASA&JPL/Caltech LEARN MORE: svs.gsfc.nasa.gov/31166/

2025 Intense Wildfire Year in Northern Hemisphere • Extreme #wildfires in North America and Europe. • Atmospheric composition impacts far from where fires burn. Locations, intensity, smoke plumes Jan 1 - Nov 30 2025. #CopernicusAtmosphere CAMS/ECMWF LEARN: atmosphere.copernicus.eu/2025-sees-in...

Arctic Report Card 2025 - Key Findings • Surface air temperatures are rising. • Glaciers and ice sheets are shrinking. • Rivers are rusting. • Ocean temperatures are rising and sea ice is declining. 1/3 #ArcticReportCard #Arctic CIRES LEARN MORE: cires.colorado.edu/news/record-...

A series of storms is moving through the Pacific Northwest, downing trees and power lines along a wide swath of northwest Oregon and Southwest Washington. Read more here at OPB.org  📹 by Ryan Haas/OPB & Saskia Hatvany/OPB ✂️ by Emily Hamilton/OPB ✏️ by Frankie Benitez/OPB

My ‘office’ for today is a TGV train from Paris to Milan - via stunning scenery of mountains, waterfalls, lakes and forests 🌲🗻 I gave up short-haul flying 4 years ago for climate reasons - but I genuinely just prefer this way of travelling now. @flightfreeuk.bsky.social

Waterfronts should be designed for people, not for cars!

Flood Watches & Warnings are posted across Washington and Oregon this week as an atmospheric river impacts the Pacific Northwest. ⚠️Heavy rain, strong winds, and the risk of landslides are all on the radar. Let’s break down how climate change plays a role in events like this 🧵

Shanghai famously turned its back on the bike decades ago, surrendering its streets to cars in pursuit of economic prosperity. But in the coming years, they will make a remarkable U-turn, reclaiming substantial road space to add 1,250 km of high-quality cycling routes in the name of urban vitality.🧵

Kīlauea Volcano • Ep 37, #Kīlauea summit eruption, Halemaʻumaʻu crater, ended Nov 25, 2025. • Fountain heights of 500-600ft (150-180m). • Estimated 8.2 million cubic yards (6.3 million cubic meters) lava over 9.2 hours. 1/2 #Volcano #Geology #Hawaii USGS Learn More: www.usgs.gov/volcanoes/ki...

Arctic and Antarctic Sea Ice • Daily Polar Sea Ice, Two Year History • November 30, 2023 — November 29, 2025 * "Arctic sea ice extent is currently the lowest on record (JAXA data)" #Arctic #Antarctic #SeaIce #dataviz Datasets courtesy of NASA/GSFC&JAXA NASA SVS Learn More: svs.gsfc.nasa.gov/5099

Loud voices in the climate community ignore the actual science and constantly use cherry-picking, strawmann arguments and ad hominems to try and deny the undeniable. Pretending that we have been exaggerating, while it's likely even worse than we feared (again, based on data).

🇯🇵 The Japanese students turning walking into a viral spectacle For more than half a century, students at Nippon Sport Science University have captivated audiences with their synchronised walking -- a practice known as Shudan Kodo, meaning "collective action".

Deadly Vietnam Floods Heavy rain, severe flooding, landslides in Vietnam. Relentless rain lashed Vietnam since late October. "Scientists have identified a pattern of human-driven climate change that has been making extreme weather more frequent and destructive." www.youtube.com/watch?v=4fzf...

Cycling is Terrible For The Economy “Choose wisely…Worth thinking about!!” Credit: via @urbancyclinginstitute.org

Trams on grass, Rotterdam edition.

Keeping up with students’ methods of cheating has always been a cat-and-mouse game for teachers. But some now say that AI tools, particularly Google Lens, have made it impossible to enforce academic integrity in the classroom. bit.ly/3Lww7rK 📝 @carolynjones100.bsky.social 📸 Lauren Justice

Cosmos: A Personal Voyage One of my favorite clips from Episode 7 (Nov. 1980), Carl Sagan returns to his 6th grade classroom to teach students in his childhood neighborhood of Brooklyn, New York. You can see their genuine curiosity, wonder, and eagerness to learn. www.youtube.com/watch?v=DNgJ...

Loved this morning’s Women’s Breeze Ride - a relaxed 8 miles along the Worcs & Bham Canal towpath, the A38 cycleway, and the beautiful Rea Valley. So good to see the green spaces full of life - cyclists, walkers, even kayakers! 🚴‍♀️🛶 Good for the body and soul 💚 letsride.co.uk/rides/breeze...

Global Greenhouse Gas (GHG) emissions rise again in 2024, up 2.3%. This is our collective progress, 10 years after the Paris Agreement. www.unep.org/resources/em... 1/

Neighborhood Walk Beautiful colors of Autumn Leaves on my walk today! Mid 50s F and overcast concrete skies, very comfortable! #Hiking #AutumnLeaves #Walking #PDX #PNW

As coal power plants go offline, data centers boot up, and more people switch to electric appliances and vehicles, the region's electrical grid is strained and there’s not enough renewable energy projected to come online to fill the gap.

Hurricane Melissa Lightning flashes within powerful eye wall of Category 5 Hurricane #Melissa. 🌀 Potential to be strongest storm to make landfall in #Jamaica on record. 🌀 1/2 #Hurricane #TropicalCyclone #Lightning 2025/10/27 UTC CSU/CIRA&NOAA LEARN MORE: satlib.cira.colostate.edu/event/hurric...

Upwelling Failure For the first time since records began, the cold, nutrient-rich waters of the Gulf of Panama failed to emerge from depths of the ocean to rise to the surface. Finding highlights climate’s impact on fundamental oceanic processes. #Chlorophyll LEARN: stri.si.edu/story/upwell...

Harvest Moon No matter how far apart we are, we are always under the same moon. October 6, 2025 #HarvestMoon #MidAutumnFestival #FullMoon www.timeanddate.com/astronomy/mo...

Imelda Absorbs Humberto’s Remnants • Hurricanes #Imelda & #Humberto traveling in western Atlantic. • Humberto dissipates & gets assimilated by Imelda. Sept 29 - Oct 2, 2025 UTC Extratropical Transition #Hurricane #TropicalCyclone CSU/CIRA&NOAA Learn More: satlib.cira.colostate.edu/event/hurric...

Jane Goodall Releases Chimp I had the opportunity to meet her many years ago while attending one of her presentations with "Roots & Shoots" at my sons international school in Asia at the time. youtu.be/bCVmfDuRpBc