You are here. We've breached 430 ppm CO2. #climatechange

Earth’s sky hasn’t always been blue, and won’t always be.

Please share far and wide.

There likely was a lake there billions of years ago and maybe, just maybe, tiny microorganisms lived on the lake bed and left chemical traces of their meals for humans to recognize.

Paper Quotes: "Because the biosphere, as a living system, processes information in ways nonliving systems do not, information-theoretic approaches can capture aspects of coupled system dynamics that might otherwise remain invisible to purely physical or chemical models".

#PPOD: This ALMA survey to Resolve exoKuiper belt Substructures (ARKS) gallery of faint debris disks reveals details about their shape: belts with multiple rings, wide smooth halos, sharp edges, and unexpected arcs and clumps, which hint at the presence of planets shaping these disks. 🧪 🔭

“Seeing is inference from incomplete information”. – Jaynes, E. 2003, Probability Theory: The Logic of Science. Cambridge University Press, Cambridge.

The gas between the stars also moves.

"...in astrobiology, the lack of a non-biological explanation isn’t where life detection ends – it’s where it begins." Signs of ancient life may have been found in Martian rock – new study theconversation.com/signs-of-anc...

Microplastics are airborne too. www.nature.com/articles/d41...

"Finding iron biosignatures on another world wouldn't just confirm life exists elsewhere, it would reveal that the same fundamental chemistry... operates throughout the solar system." phys.org/news/2025-11...

One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda. For example, consider this piece of right-wing propaganda from The Telegraph that was just published

Timely reminder.

The decision by the Advisory Committee on Immunization Practices of the Centers for Disease Control and Prevention to downgrade its recommendations to protect infants from hepatitis B is a dangerous move that will harm children. Click here to read AAP's full statement: bit.ly/3Y9ZQJT

This is very cool (no pun intended)!

Covid-19 has been linked to cardiovascular complications, but the long-term impacts, particularly for mild infections, are not well understood. A study in Nature Communications demonstrate an increased risk of cardiovascular disease after Covid-19, also among mild cases. #medsky #cardiosky 🧪

This is part of our universe. An area of sky about the size of a grain of sand held at arm's length. The spiked features are stars in the Milky Way. EVERYTHING ELSE IS A GALAXY.

Why are planetary scientists, astrobiologists and and SETI scientists so negative (pissed off, even) about Avi Loeb’s repeated claims that 3I/Atlas may be an invading alien spaceship? 🧵 🧪🔭🛸 (1/7)

The driving motivation behind science is to ultimately answer one simple question (with no simple answer): are we alone in the universe?

“It may start as a respiratory virus, but that’s really the tip of the iceberg, and it has downstream ramifications in multiple organ systems, specifically in this case in the cardiovascular space”.

If galaxies could talk…

Hypnotizing.

Reaction-diffusion systems are so cool.

"Current guidelines of increasing physical separation appear to have a limited impact on reducing aerosol transmission." Fluid dynamical pathways of airborne transmission while waiting in a line | Science Advances www.science.org/doi/full/10....

Much needed.

The physics of airborne COVID transmission in a set of video lectures. ocw.mit.edu/courses/res-...

One of this year’s Nobel prize laureates in chemistry is an immigrant in the U.S. 👍

At the dawn of the French Revolution, rumors spread like a disease | Journal Club | PNAS www.pnas.org/post/journal...

Sen. Maria Cantwell (D-WA), top Democrat on Senate Commerce Cmte, is out with a Democratic staff report: "The Destruction of NASA's Mission: Whistleblowers Reveal OMB's Unconstitutional Plot to Gut the Agency." www.commerce.senate.gov/services/fil...

Earth’s journey through the Milky Way’s dense spiral arms might have churned up the planet’s surface go.nature.com/3Ildx4C

Hey, so...Covid rates have gotten real high. Maybe change your behavior to fit this new risk profile? Stop eating indoors at restaurants, mask on mass transit, that kind of thing?

“There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been…nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'” –Isaac Asimov

Our new study finds that the upper atmosphere is becoming more sheared and less stratified because of climate change. Both these changes are making the atmosphere less stable and more conducive to turbulence. Covered by the BBC here: www.bbc.co.uk/news/article...

Mammoths in Mexico? Huge bone trove reveals giant beasts thrived in warmth, too | Science | AAAS www.science.org/content/arti...

COVID-19 is spreading in California. Getting the 2024/2025 COVID-19 vaccine while pregnant is safe, effective & protects you & your developing baby from getting very sick. 📲Talk to your prenatal care provider or visit MyTurn.ca.gov to schedule your vaccine appointment.

Here is the official statement from the American Meteorological Society on the "foundational flaws" of the Department of Energy’s recent attempt to deny the reality of #climate change. www.ametsoc.org/ams/about-am...

“This planet is run by crazy people. Remember what they have to do to get where they are. Their perspective is so narrow, so…brief… They care only about the time they are in power”. - Carl Sagan, Contact

“…the discovery of an extended CO2 coma and the abundance of ice water shows that 3I/ATLAS may not be so different from the comets that formed around our Sun”. spherex.caltech.edu/news/3i-atla...

El asteroide Bennu tiene materiales de miles de millones de años del Sistema Solar y de más lejos. #Latinus #InformaciónParaTi latinus.us/estilo-de-vi...

This is a shocking executive order that undermines the very idea of open inquiry. It turns federal grants into dispensations, subject to arbitrary and capricious withdrawal should the recipient say or believe the wrong things. www.whitehouse.gov/presidential...

Actually, the best protection is to *combine* vaccines with N95-wearing, indoor space ventilation and indoor air filtration. All of those things will reduce your risk of developing Long COVID, which can damage your heart, brain and other organs.

Dr. Woodrum’s story is inspirational. It reminded me why space is worth exploring: love.

5 big unanswered questions about the origin of life It's 2025, and Earth is still the only example we have of a planet inhabited by life. Here are 5 big questions we're seeking to answer about how it came to be, as well as finding life elsewhere. bigthink.com/starts-with-... #space #life #astro

#WallpaperWednesday: #RubinFirstLook edition 🤩 Need a new phone background? Loved the first images from NSF–DOE Rubin Observatory? We've got you! Save one of these to use, set it, and enjoy the cosmos captured by Rubin every time you use your phone 🌌🔭🧪

The Planetary Society will provide a NASA budget briefing on Thursday, June 12, at 12pm ET! We'll answer the top-rated scientific community questions, share everything we know, and give you our expert perspective on what's going on. Register for free here: us06web.zoom.us/webinar/regi...

Our global petition to save NASA science closes this Thursday, and we’re just shy of 15,000 signatures! Every name counts, this petition will be hand-delivered to members of Congress. Add yours today, Save NASA Science. planet.ly/petition

And to think that the distance between those two points is the farthest humans have traveled from Earth.

New model helps to figure out which distant planets may host life