423.04 parts per million (ppm) CO2 in air 03-Oct-2025 keelingcurve.ucsd.edu

New paper! Our PhD-student Phillip conducted a meta-analysis of psychological determinants of sustainable energy technology adaption. Rather than writing an extensive 🧵 here, Phillip summarises our work in the video below www.youtube.com/shorts/2NIZh... www.sciencedirect.com/science/arti...

429.80 parts per million (ppm) CO2 in air 22-Jun-2025 keelingcurve.ucsd.edu

Celebrating the solstice (plus 3 days) with the latest version of psych (2.5.6) and psychTools (2.5.7.22 -- it took a few tries to get it) which are now on CRAN. Small improvements and minor bug and typo fixes (see the news files). Added a function to report the information in correlations.

If you’ve got a badge and a gun but think your actions are shameful enough to need a mask, you should quit.

The impacts of Trump's campaign against American science will likely be profound, write John P. Holdren and Neal Lane. "The rapidly growing damage to the scientific pillar of American well-being and influence requires that Republican members of Congress stand up to rein Trump in."

There is a second support letter that the public can sign. You can help advance medical cures in the US, and defend against Trump’s tyrannical attacks on the country, by signing it. Please do. We hope for your support. And please share with your family and friends!

The Trump administration is undermining the collection and distribution of essential weather and climate information, right before hurricane season. "Decommissioned, retired, paused: The weather, climate, and Earth science data the government doesn’t want you to see," by @jessimckenzi.bsky.social.

The Trump administration's disassembling of the National Oceanic and Atmospheric Administration is threatening the Keeling Curve, an iconic measure used in climate change research. "How the dismantling of NOAA threatens the Keeling Curve," by Eric Morgan and Ralph Keeling. ⬇️

The Trump administration has dismissed the scientists behind the U.S. climate report. Now scientific societies are stepping in to finish the job—because the climate crisis doesn’t pause for politics. Science will not be silenced. apnews.com/article/clim... #ClimateScience #StandUpForScience

In the "Best Opening Paragraph of a Research Paper" category, a favorite My problem is that I have been persecuted by an integer. For seven years this number has followed me around, has intruded in my most private data, and has assaulted me from the pages of our most public journals. bit.ly/3RLp5yT

The current level of CO2 in the atmosphere is 427 parts per million. What does that mean, and what can we do about it? On April 17, join the Bulletin for a virtual event on the risks of climate change and how to understand what planetary shifts are inevitable—and which have solutions.

An "apparent attempt by Russia to infect AI chatbots themselves with propaganda shows that the internet as we know it may be changed forever." What can be done to mitigate the harms of LLM grooming? Read more from Annie Newport and @ninajankowicz.com. ⬇️

Yesterday, Maine Senator Angus King grilled US Director of National Intelligence, Tulsi Gabbard, about the 2025 Annual Threat Assessment, which made no mention of climate change for the first time in 11 years. @jessimckenzi.bsky.social reports below.

Celebrating the Equinox with the release of psychTools 2.5.3 to CRAN. (joining psych 2.5.3) Addition to vJoin but more importantly, edits to 4 vignettes: Introduction to the psych package Overview of the psych package for psychometrics Using the psych package for factor analysis How to find Omega

"Ice loss in Greenland is already large, greatly accelerated from centuries of near stability, and irreversible. [...] Though a tipping point for future ice loss is already crossed, the pace of this loss is still not set in stone," writes Twila Moon. Read more below:

Congratulations to Dan Mroczek for a life time Achievement award from the European Association of Personality Psychology. Also honored were Emorie Beck with the Early Achievement Award Chris Soto the Mid Career award. Antonis Koutsoumpis the EAPP dissertation award. Reinout de Vries for Leadership.

Celebrate the solstice with the latest release of psych 2.5.3 now on CRAN. The basic bug fixes (thanks all for finding them) and the addition of some minor suggestions from a number of users. Update to psychTools coming soon. (Required psych to be on CRAN first.)

"The ability to observe, forecast, and warn of impactful weather is being degraded. This is putting American lives and the American economy in danger." "Hurricane Elon: DOGE cuts could cause meteorologists to miss the next 'nightmare' storm," by @johnmoralestv.bsky.social.

It's not real. It's not us. It's not bad. It's too hard to fix. It's too late. Just about every climate denial argument I've ever heard is a variant of one of these five categories, and each one is as bad as the next. Why? Because they all have the same goal: prevent action as long as possible.

If you're in Austin, come visit!

💻 ⚡ By harnessing the power of supercomputers, a team of scientists from Scripps Oceanography, NASA Jet Propulsion Laboratory and NASA Goddard Space Flight Center uncovered that small-scale ocean processes may have a far greater impact on storm development than previously believed.

Standing up for science in Chicago

David Condon and I are very pleased that our Unidim paper is finally out at Psychological Measurement: Open access at dx.doi.org/10.1037/met0... We describe the unidim statistic which has been available in the psych package for several years. We compare u to CFI, omega_h, and other estimates.

Causal inference iceberg! What's missing?

427.22 parts per million (ppm) CO2 in air 14-Feb-2025 keelingcurve.ucsd.edu

The Democratic party is laying low because they believe backlash to Trump is inevitable and they're going to win midterms and 2028 no problem. I promise you this is what they believe. And they are so wrong. 1/2

Even if USAID programs are allowed to resume after the 90-day freeze, much of the damage will have already been done. "How the shutdown of USAID will hurt Americans and empower foreign adversaries," by @erik-english.bsky.social.

"When the United States economy is at stake, stability ought to be the overriding virtue." "Why DOGE’s meddling at Treasury could have catastrophic consequences for the US economy," by @lizthegrey.com.

427.30 parts per million (ppm) CO2 in air 04-Feb-2025 keelingcurve.ucsd.edu

TLDR: if you're making monochrome charts, you need to actively design them that way. You can't just assume that a colour chart will automatically work when printed in black and white. 📊 #DataViz #RStats

425.85 parts per million (ppm) CO2 in air 01-Feb-2025 keelingcurve.ucsd.edu

www.iqscorner.com/2025/02/new-... #intelligence #cognitive #scholarship #research #schoolpsychology

The world has changed before and, when it did, it wasn’t because a president, a prime minister, a CEO or a celebrity decided it had to. It began when ordinary people – people of no particular power, wealth, or fame – decided that the world could and should be different.

The #DoomsdayClock moves to 89 seconds to midnight. Humanity stands closer to catastrophe than at any moment in its history. How did we get here and what must we do now? Chair of The Elders, Juan Manuel Santos, gives an urgent diagnosis. @thebulletin.org

Today, the Bulletin’s Science and Security Board sets the #DoomsdayClock at 89 seconds to midnight. "The world depends on immediate action." Read the full statement below.

"Change begins with individuals, but it thrives in communities. In the past, individuals have altered the course of history by coming together, and tackling climate change is no exception. That’s why it’s so important for each of us to find our people—" Katharine Hayhoe mailchi.mp/e3df04e16d3a...

Just heard Dr. Katharine Hayhoe on Quirks and Quarks. About climate science. Definitely worth a listen. 💚 www.cbc.ca/radio/quirks...

"It's snowing in Florida - where's global warming now?!" If you've ever thought that (or heard anyone else say it), I have a Global Weirding episode for you!

We now predict a mean of 2.7C of warming in 2100. Not the 4C we predicted a decade ago. This is due to less exaggeration and better policy and technology. However, 2.7C is still very bad and it could still become much worse. At the same time we can bend the curve down further

@baswerdlow.bsky.social and a few others expressed an interest in seeing the grad personality course we will run this spring. Here it is for your perusal and for your comments and recommendations. I'm sure I've missed papers--please recommend them. The doc is open: docs.google.com/document/d/1...

I’m a scientist who studies how climate change impacts our lives and the places we love. Most of us are worried, but many feel stuck on what to do. If that's the way you feel, check out this list below! We can’t fix it alone, but I know we can together. 💚

Water access issues for firefighters in and around Los Angeles are due to challenges related to the region's wildfires, not its overall water supply. Trump's claims otherwise are "unhelpful, to say the least." @petergleick.bsky.social on misinformation and the LA wildfires. ⬇️

My manuscript on the factor structure of Big Five TRAIT measures at the between- and within-person level has now been published in the European Journal of Personality: doi.org/10.1177/0890... free version: osf.io/preprints/ps... (1/8)

Paper alert: across 10k participants & 36 versions of the emotional dot probe task, task *reliability* cannot be distinguished from 0 (!). Raises very serious questions about the literature (how did so many find positive relations between this task and other variables). #PsychSciSky

In 2024, there was hardly a week without a reminder of the danger posed by nuclear weapons. Here are six standout Bulletin articles on nuclear risk. "The nuclear year in review: Welcome to the antechamber of the next nuclear crisis," by @francoisdm.bsky.social.

📅Jan 3, 1889 Francis Galton published Natural Inheritance He invented the quincunx (or Galton Board) to illustrate how random variation in traits ( a binomial distribution) would tend toward a normal distribution as sample size increases.

425.23 parts per million (ppm) CO2 in air 24-Dec-2024 keelingcurve.ucsd.edu