Jorge Colón

Budget cuts by the federal appointed @FOMBPR have already reduced state funding for the @UPR_Oficial by 48%, jeopardizing the University of Puerto Rico's capacity to drive economic R&D and produce STEM professionals for the US and Puerto Rico. science.org/doi/10.1126/sc… @CienciaPR

New study finds the current heat wave in the West would be "virtually impossible" without human-caused climate pollution. We're on the verge of breaking an all-time March heat record for the US today/tmrw. cnn.com/2026/03/20/wea…

The US empire is doing everything it can to try to suffocate a small island nation of 11 million people. What the US is doing to Cuba is absolutely insane. It a barbaric medieval-style siege. The Trump admin is trying to starve Cubans to death and collapse their society.

El informe ‘Ignorancia deliberada: El fracaso sistémico de la Reforma policial de Puerto Rico’, es una investigación que Kilómetro Cero realiza con la asesoría técnica y colaboración de @hrdag Human Rights Data Analysis Group, con sede en San Francisco, California. La investigación se enfoca en los patrones de uso de fuerza policial que no desembocaron en muertes, tales como disparos con armas de reglamento, el uso de dispositivos de control electrónico y los niveles de severidad de la fuerza aplicada por la Policía. En ‘Ignorancia deliberada’ utilizamos la rigurosidad de los métodos estadísticos para refutar las narrativas policiales oficiales que proclaman el éxito del Acuerdo de Reforma Policial sin el respaldo de datos verificables. El objetivo general de este informe de investigación consiste en responder la siguiente pregunta: Después de 13 años bajo un Acuerdo de Reforma Policial, ¿ha reducido la Policía sus patrones excesivos y discriminatorios de uso de fuerza? Descárgalo aquí, discútelo, comparte entre tus redes y únete a la fiscalización de la violencia de estado. kilometro0.org/informes #OtraSeguridadPública #ignoranciadeliberada #AgitaYTransforma

Phoenix hit 105°F today which the hottest March day on record, beating the old record set…yesterday 🔥🌡️ This is the earliest 105°F+ on record, shattering old record by 1 month (April 20th, 1989). The average first 105°F+ day is May 22nd, more than 2 MONTHS from now. #AZwx

Pretty intuitive animation explaining seasons, equinox, solstice, length of day and night. Today marks the spring equinox in the Northern Hemisphere. [🎞️ German Valencia Garcia]

Pete Hegseth accuses Iran of investing in missiles and weapons instead of people, during a speech in which he's asking for $200 billion for weapons, instead of people.

Spectroscopy shows a significant decrease in infrared leaving the Earth: - agupubs.onlinelibrary.wiley.com/doi/10.1029/20… - acp.copernicus.org/articles/7/424… And an increase in the infrared coming back down from the atmosphere (0.2 W per m 2 per decade): - nature.com/articles/natur… - agupubs.onlinelibrary.wiley.com/doi/full/10.10… 🛰️📡

A new United States national temperature record for March of 110 degrees was provisionally set near Martinez Lake, Arizona on Thursday.

Defense Secretary Pete Hegseth criticized Iran for investing in missiles and weapons over its people, as the Pentagon prepares a request for up to $200 billion in additional war funding, amidst record cuts to healthcare and other human needs.

We can't have clean energy because it will destroy the oil industry. We can't have healthcare because it will destroy the health insurance industry. We can't have peace because it will destroy the weapon industry. Capitalism built a system we can't afford to do the right thing.

HISTORIC MARCH 2026 U.S. HEAT, MEDIA FAILED TO LINK WITH CLIMATE So far, 65 cities have tied or set new March record highs- across the U.S.- Temperatures 15-30°F above the historical average for March at this time of year. Media (today) made no link to climate or global warming (The Weather Channel) #heatwave #ClimateChange #globalwarming

105° in #Phoenix today has a return interval of ~4,000 + years in March based on the historical record. It’s plotted against the highest March temp in each year back to 1896. The gray dot right under it is yesterday, otherwise the 105° would look even more errant. Obviously though this type of rogue heat is much more likely now-a-days due to climate change. #heatwave

Louise Michel, líder de la comuna de París de 1871, posteriormente fue reclutada por Betances para apoyar la independencia de Cuba y Puerto Rico.

Well, if yesterday's map was ridiculous, I'm running out of superlatives to characterize today's. Countless locations from Pacific Coast to Great Plains are currently experiencing all-time record March warmth, w/ some locations approaching/exceeding April (or even May) records.

Bien dicho. Well said, Rigoberto! Comment: Speaking the language of chemistry worldwide cen.acs.org/acs-news/Comme… via @cenmag

Lee mi columna en Metro: La necesidad urgente de las fuentes energéticas renovables metro.pr/opinion/2026/0…

The Economist. Uno de los grandes voceros de la clase capitalista global.

Mid-ocean ridges ARE studied. Extensively. Earth scientists have quantified MOR CO2 emissions for decades. The number? ~100–200 million tonnes of CO2 per year. Human emissions in 2023: 37.4 BILLION tonnes. That's not a footnote. That's humans emitting ~200x more CO2 than every volcano, vent, and ridge on the planet combined, and we know this because scientists measured it. The Woods Hole hydrothermal vent research? Real science. It's about deep-sea ecology and ocean chemistry dynamics, not a smoking gun that overturns radiative forcing physics. The Kunlun Field? A remarkable discovery. Also completely irrelevant to the atmospheric CO2 budget. "We didn't know this field existed" ≠ "our global carbon accounting is wrong." Area ≠ emission rate. The "trace gas" framing is 50-year-old denier rhetoric. Water vapor is ~2% of the atmosphere. CO2 is 0.042%. CO2 still drives warming because of how it interacts with infrared radiation - physics that's been settled since Tyndall in 1859. MOR spreading rates DO affect long-term carbon cycling. On timescales of millions of years. Not the 50-year signal we're measuring right now in the atmosphere.

Things are about to get very strange on a global level

The hysteresis effect on stratoclumulus cloud collapse and why simply storing CO₂ back below 1,200 ppm will not restore the stratoclumulus cloud deck. x.com/DavidUllrich20… This is a fascinating and deeply unsettling piece of climate physics. Let’s walk through the mechanism of stratocumulus cloud dissipation and the critical hysteresis problem. What Stratocumulus Clouds Do — and Why They’re Vulnerable Stratocumulus clouds are the low-lying, blanketing kind that have by far the largest cooling effect on the planet, covering a quarter of the ocean and reflecting 30 to 70 percent of the sunlight that would otherwise be absorbed by the dark ocean surface below. The Caltech simulation by Tapio Schneider, Colleen Kaul, and Kyle Pressel identified two specific physical mechanisms that cause these clouds to unravel as CO₂ rises: 1. Turbulent entrainment. When higher CO₂ levels make Earth’s surface and sky hotter, the extra heat drives stronger turbulence inside the clouds. The turbulence mixes moist air near the top of the cloud, pushing it up and out through an important boundary layer that caps stratocumulus clouds, while drawing dry air in from above — a process called entrainment — which works to break up the cloud. 2. Loss of radiative cooling at cloud tops. As the greenhouse effect makes the upper atmosphere warmer and thus more humid, the cooling of the tops of stratocumulus clouds from above becomes less efficient. This cooling is essential, because it causes globs of cold, moist air at the top of the cloud to sink, making room for warm, moist air near Earth’s surface to rise into the cloud and sustain it. When cooling gets less effective, stratocumulus clouds grow thin. These two forces compound each other until, abruptly, the cloud deck collapses entirely. The Tipping Point When the CO₂ concentration reaches about 1,200 parts per million in the simulation — which could happen in 100 years under business-as-usual emissions — more entrainment and less cooling conspire to break up the stratocumulus cloud altogether. This is not a gradual fade; the simulated climate, as MIT’s Kerry Emanuel described it, “goes over a cliff.” The loss of low clouds and the resulting rise in water vapor — itself a potent greenhouse gas — leads to runaway warming extrapolated to an 8-degree Celsius jump on top of the warming already caused directly by CO₂. The Hysteresis Problem — Why Reducing CO₂ Won’t Bring the Clouds Back This is where the research becomes especially alarming. Hysteresis means the state of a system depends not just on current conditions, but on the path that got it there. In this context, it means the threshold for clouds to disappear is not the same as the threshold for them to return. After the climate has made the transition to a cloudless state and water vapor saturates the air, ratcheting CO₂ back down won’t bring the clouds back. “There’s hysteresis,” Schneider said. “You need to reduce CO₂ to concentrations around present day, even slightly below, before you form stratocumulus clouds again.” So the asymmetry is stark: cloud collapse begins at ~1,200 ppm on the way up, but on the way back down, you would need to return CO₂ to somewhere near or below today’s levels (~420 ppm) to restore them. This is not a minor overshoot problem — it means that even a heroic carbon-capture effort that brought atmospheric CO₂ from 1,300 ppm back down to 900, 800, or even 600 ppm would be entirely insufficient to restore the stratocumulus deck. The system would be locked in a hot, cloudless state across that entire descent. Why the Paleoclimate Record Supports This Paleoclimatologists note that this hysteresis might explain other puzzles in the record. During the Pliocene, 3 million years ago, the atmospheric CO₂ level was 400 ppm — similar to today — but Earth was 4 degrees hotter. This might be because the planet was cooling down from a much warmer, largely cloudless period, and stratocumulus clouds hadn’t yet come back. In other words, we have historical evidence of the climate being stuck in a high-temperature, low-cloud state even at CO₂ concentrations equivalent to the present day — exactly what the hysteresis model predicts. The Core Implication The practical consequence is profound: once this tipping point is crossed, the climate system enters a regime where the usual logic of “reduce emissions → reduce warming” breaks down. The planet would continue absorbing far more solar radiation than before cloud loss, driven by a water vapor feedback that self-sustains independently of CO₂. Carbon drawdown alone could not flip the system back. You would need to remove CO₂ to sub-present-day concentrations — an extraordinary and likely centuries-long undertaking — before the physical conditions for stratocumulus formation are restored. This is what makes this tipping point categorically different from most other climate risks: it is, in a meaningful sense, a one-way door. Simulated subtropical clouds in the present climate (400 ppm CO₂), at higher CO₂ (1,200 ppm) and after stratocumulus breakup (1,300 ppm). Credit: Anthropic Claude and Schneider et al.