A nuclear war may be the world's greatest threat ... but Climate change is the world's greatest crisis bc it is happening now. #ClimateBrawl

When I say RFK Jr doesn't understand science and medicine I mean he literally doesn't believe that HIV is the cause of AIDS I'm not talking subtle interpretation of complex data here

Something very strange is going on. It is not just the climate crisis. However, it is now very clear, that no major government, will ever take the action necessary to address the climate crisis agreed to at the 1992 Rio Earth Summit and the 2015 Paris Agreement. 1/🧵

Breaking! Lazard 2025 levelized cost of energy out Solar and wind win again. Utility solar $58 (38-78)/MWh Onshore wind $61.5 (37-86) Fossil gas $78.5 (48-109) Coal $122 (71-173) Nuc $181 (141-220) lazard.com/media/eijnqja3…

The official report on the blackout in Spain and Portugal is just released. I'll give a quick summary of findings and provide some additional info. TL;DR conventional power plants didn't control the voltage as planned over-voltage caused renewables to turn off as required

I’ll wear a respirator for the rest of my life if it means retaining the cognitive function I have now because GOOD LORD people’s brains are truly failing them. I shudder to think what it will be like in 5 years.

The latest climate denial argument is that mid-holocene forests that are today emerging from melting ice means that today's temperatures are not hotter than a few thousand years ago. See why that's wrong, from Ryan Katz-Rosene, PhD: thetradeoff.substack.com/cp/166188401

Spent a few weeks working on this one! I saw too many social media posts from skeptics about these receding glaciers which had revealed ancient tree stumps - claiming this somehow disproves the IPCC’s claim about how it’s warmer now than it has been for 125,000 years… uh, no!

The study shows that such extreme events are becoming more frequent, longer-lasting and more severe. The steepness of the rise was not foreseen. The researchers say they are amazed and alarmed by the latest figures from Nasa’s Grace satellite. theguardian.com/world/2025/jun…

I’ll say again, in 20 years time we are going to look back and kick ourselves for how easy it is to switch to 100% renewables. The only thing holding us back is the fossil fuel industry and their paid blockers. #ClimateCrisis

By far the scariest part of this is that the *rate* at which our planet is warming has increased so quickly. I mean, the last time I checked a few years ago the consensus was that the planet was heating 0.2C / decade.

The ignorance of science is bad. The choice to be ignorant of science is worse. The promoting to be ignorant of science is more worse. The ignorant of science by politicians is the worst. #ClimateBrawl

It's already #ShowYourStripes day in many places like New Zealand, Australia, Japan and Papua New Guinea. All these countries are warming rapidly. Visit ShowYourStripes.info to find your warming stripes and start a climate conversation online or with friends and family.

A new study says we may under-trust true news more often than we're fooled by fake news. The path forward? Not just debunking fakes but also building trust in real info. Tools like crowdsourced fact‑checkers sharpen our ability to recognize true stories.👀 nature.com/articles/s4156…

One of the most essential tests of science is reproducibility. For this chart, I separated our weather station archive into 20 independent 5% samples and computed the global land average of each. The samples vary a bit, but each one paints a similar picture of warming.

Today is #ShowYourStripesDay! 😊 On June 21st, everyone around the world can highlight their country's or city's "climate warming" stripes and share the powerful visual message of today's rapid climate change they convey. Get your custom stripes here: showyourstripes.info

To all the reply guys saying how renewables are a terrible idea. I hate to break it to you but >90% of new generation capacity built is now renewable energy, mainly solar & wind. Data from IRENA

Heat waves in the US are increasing, in all key metrics. Graph via US EPA

I discussed how climate change is increasing the occurrence of persistent summer weather extremes like the "heat domes" currently impacting the U.S. and Europe this morning on BBC News (UK): youtube.com/watch?v=jYe4wg…

"Clearly you have not looked at the science" I'm told Well I've been studying and practicing medicine for 27 years, have a PhD and 3 postgraduate diplomas So I would argue that yes, I have "looked at the science"