Starting soon!

Sunday 12/28 at 10am on Climate Chat: "Climate Chat Year in Review 2025". We'll discuss the top climate stories of the year & review the 2025 Climate Chat programs. What were your favorites? @leonsimons.com @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/uoUNmt-... #ClimateChange

Now available on Climate Chat, our first "Climate Chat Shorts"! on Why SRM/Solar-Geoengineering is Required. This is the presentation only without Q&A. #SRM #Geoengineering #ClimateCrisis youtu.be/lmxsr6b5IhE

Starting soon!

Sunday 12/21 at 10am PT on Climate Chat: Why SRM/Solar-Geoengineering is Required (with Q&A) with host Dan Miller. #SRM #ClimateCrisis youtube.com/live/icb_op9... @leonsimons.com @bikingmzstacey.bsky.social @radsci.bsky.social

James Hansen: "We project a global temperature record of +1.7°C in 2027, which will provide further confirmation of the recent global warming acceleration." @drjamesehansen.bsky.social @leonsimons.com mailchi.mp/caa/global-t...

Your periodic reminder that the Paris Agreement didn't specify how to quantify reaching global temperature thresholds (by design, otherwise there wouldn't have been a 195-country unanimous agreement). So anyone saying that we need to wait for the 30-year average to reach +1.5°C is full of sh*t:

Check out this "secret" place for pinball nirvana! The Pacific Pinball Annex holding around 1300 pinball machines. It's not open to the public, but you can visit the Pacific Pinball Museum with 100 games on Free Play! www.youtube.com/watch?v=_-Pc... @pacificpinball.bsky.social

We appreciate their time, work, and expertise. @tzeporah.bsky.social @zacklabe.com @yaleclimatecomm.bsky.social @drjeffmasters.bsky.social @jeffgoodell.bsky.social @maibached.bsky.social @petercarter46.bsky.social @danmiller999.bsky.social @race2extinct.bsky.social www.youtube.com/playlist?lis...

Put your questions in this thread! @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social

Sunday 12/14 at 10am PT on Climate Chat: Ask Us Anything #2 w/ Dan Miller & @leonsimons.bsky.social. Post questions on the YouTube Live chat or post them below. On YouTube & LinkedIn. @bikingmzstacey.bsky.social @radsci.bsky.social #ClimateCrisis #ClimateAction youtube.com/live/LZTPZOA...

I had a fascinating and wide-ranging discussion with California Energy Commission Chair David Hochschild today on Climate Chat: youtube.com/live/PHfMa6o... @calenergy.bsky.social y @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social #EnergyTransition #CleanEnergy

Starting soon!

Sunday 12/7 at 10am PT on Climate Chat: California & Clean Energy with California Energy Commission Chair David Hochschild. @calenergy.bsky.social @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social @climatechat.bsky.social #EnergyTransistion youtube.com/live/PHfMa6o...

Starting soon!

Sunday 11/30 at 10am on Climate Chat: COP30 & "The Plan" for Climate Action, with host Dan Miller. #COP30 #ClimateAction #climatecrisisis @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/9iM5rgx...

Starting soon! Sunday 11/23 at 10am PT on Climate Chat: 3 Climate Truths Everyone Must Know w/ hosts Dan Miller & @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social #ClimateChange #GlobalWarming

Sunday 11/23 at 10am PT on Climate Chat: 3 Climate Truths Everyone Must Know w/ hosts Dan Miller & @leonsimons.bsky.social. #ClimateCrisis #ClimateAction @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/xn4Zr2E...

Starting soon! Sunday 11/16 at 10am PT on Climate Chat: 'Doomsday Glacier' Update with climate scientist Eric Rignot. What happens in Antarctica does not stay in Antarctica!

Sunday 11/16 at 10am PT on Climate Chat: 'Doomsday Glacier' Update with climate scientist Eric Rignot. What happens in Antarctica does not stay in Antarctica! #ClimateChange #Antarctica #SeaLevelRise @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/iarx9Pi...

If @drjamesehansen.bsky.social at all. (2025, mainly based on NASA CERES observations) is correct about the very strong shipping SOx forcing, the climate is more sensitive to anthropogenic forcings (incl both GHGs and aerosols). Which e.g. means we need much faster mitigation and adaptation.

Starting soon! Sunday 11/9 at 10am on Climate Chat "What Politics Can & Can't Do for climate" with @jigarshahdc.bsky.social. We'll cover a wide range of topics from new energy to why governments find it hard to act on climate. @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social

Sunday 11/9 at 10am on Climate Chat "What Politics Can & Can't Do for climate" with @jigarshahdc.bsky.social. We will cover a wide range of topics from new energy sources to why administrations find it so hard to act on climate. #ClimateCrisis #ClimatePolitics youtube.com/live/P7W2aAN...

I had a fascinating discussion today with @wimcarton.bsky.social on Climate Chat about adaptation, carbon removal, solar geo-engineering, and what is needed to create real climate action. youtube.com/live/oxtkKTd...

Starting soon! (Note Daylight Savings Time ended today). Sunday 11/2 at 10am PT on Climate Chat: "Climate Politics When It's Too Late" with @wimcarton.bsky.social (author of The Long Heat). Is adaptation, CDR & SRM just scams to keep FF emissions going? What needs to change? #ClimateCrisis

Sunday 11/2 at 10am PT on Climate Chat: "Climate Politics When It's Too Late" with @wimcarton.bsky.social. Is adaptation, CDR & SRM just scams to keep FF emissions going? What needs to change? @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/oxtkKTd...

Sunday 10/26 at 10am PT on Climate Chat: "Debunking the DoE Climate Denial Report" with climate scientist @andrewdessler.com On YouTube & LinkedIn. #ClimateDenial #ClimateCrisis @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/6SPrGEY...

Sunday 10/19 at 10am PT on Climate Chat: @leonsimons.bsky.social presentation to the Global Heating Emergency conference on Accelerated Global Warming (pre-recorded). @radsci.bsky.social @bikingmzstacey.bsky.social #ClimateCrisis #GlobalWarming youtu.be/L8C8dOYp6Ls

🚨 None of the UN IPCC models capture what NASA satellites are seeing. We should assume and prepare for the worst, as there is a non-zero chance of 3°C of global warming by 2050. We better assume that it will happen and/or try to make sure that it doesn't happen. 1/

I was too late to realize that I should have included our little chickens on Climate Chat to crank up the of viewers. Here's a post livestream screenshot, with @danmiller999.bsky.social and @bikingmzstacey.bsky.social

Starting soon! Sunday 10/12 at 10am PT on Climate Chat: "Northern/Southern Hemisphere Warming Asymmetry" with co-host @leonsimons.bsky.social #GlobalWarming #ClimateCrisis

Sunday 10/12 at 10am PT on Climate Chat: "Northern/Southern Hemisphere Warming Asymmetry" with co-host @leonsimons.bsky.social. On YouTube and LinkedIn. #ClimateCrisis #ClimateAction @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/CRy0SsN...

In a functioning society, this would have been front page news everywhere. In our society, this didn't make the fine print. As @georgemonbiot.bsky.social pointed out once, it's quite depressing to check the headlines when you know what the real headline should be...

Sunday 10/5 at 10am PT on Climate Chat: author of "We Are Eating the Earth" @mikegrunwald.bsky.social on Is "Carbon Farming" a Scam? #ClimateCrisis #Farming @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/4W5J2XK...

Jim Hensen was right in 1980s. @danmiller999.bsky.social @billmckibben.bsky.social @leonsimons.bsky.social youtube.com/shorts/HhSgS...

Starting soon! Sunday 9/28 at 10am PT: "+3ºC by 2050?!" with hosts Dan Miller & @leonsimons.bsky.social. On German Meteorological Society and Physical Society warning. #GlobalWarming #ClimateChange

Sunday 9/28 at 10am PT: "+3ºC by 2050?!" with hosts Dan Miller & @LeonSimons8. On German Meteorological Society and Physical Society warning. @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social @climatechat.bsky.social

Starting soon! Sunday 9/21 at 10am PT on Climate Chat: "What the Hell is Going On in the North Pacific?" with hosts Dan Miller & @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social

Sunday 9/21 at 10am PT on Climate Chat: "What the Hell is Going On in the North Pacific?" with hosts Dan Miller & @leonsimons.bsky.social. On YouTube & LinkedIn. #ClimateCrisis #GlobalWarming youtube.com/live/BNZ_biC...

Starting soon! Sunday 9/14 at 10am PT on Climate Chat: Carbon Capture for Pulp & Paper Mills with Svante co-founder Brett Henkel. On Youtube & LinkedIn. #CCS #CarbonCapture #ClimateAction

Sunday 9/14 at 10am PT on Climate Chat: Carbon Capture for Pulp & Paper Mills with Svante co-founder Brett Henkel. Post your questions below! #CarbonCapture #ClimateAction youtube.com/live/cfQTFc6...

I enjoyed my Science Talk discussion with Muhammad Ittefaq on climate change:

How much earth 🌍 is warming and how do we know? What is climate sensitivity? Listen to @danmiller999.bsky.social explanation. youtube.com/shorts/9iwHY...

So proud of this collaboration led by @cssn.org 110 top experts from around the world 13 chapters on who is blocking or slowing action on climate change A quantum leap in our understanding of why society has failed to solve this Will be free online Oct 14 1/x global.oup.com/academic/pro...

Starting soon! Sunday 9/7 at 10am PT on Climate Chat: What SETI Tells Us About Climate Change on Earth with SETI Institute CEO Bill Diamond. #SETI #ClimateChange #GlobalWarming

Tomorrow, Sunday 9/7 at 10am PT on Climate Chat: What SETI Tells Us About Climate Change on Earth with SETI Institute CEO Bill Diamond. #SETI #ClimateChange #GlobalWarming

Sunday 9/7 at 10am PT on Climate Chat: "What SETI Tells Us About Climate Change on Earth" with @setiinstitute.bsky.social CEO Bill Diamond. #SETI = Search for Extraterrestrial Intelligence. @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social youtube.com/live/Iw1UrBl...

Starting soon! Wednesday (special day) 9/3 at 10am PT on Climate Chat: Author & advocate Bill McKibben on The Power of Solar Power.

Tomorrow (Wednesday - special day) on Climate Chat: Bill McKibben!