#thinktober
https://phys.org/news/2025-08-dinosaur-teeth-climate-capsules-secrets.html
"Dinosaur teeth serve as 'climate time capsules,' unlocking secrets of Earth's ancient greenhouse climate"
"The team of researchers investigated the tooth enamel of dinosaur teeth found in North America, Africa and Europe and dating back to the late Jurassic and the late Cretaceous periods. Tooth enamel is one of the most stable biological materials. It contains three isotopes of the oxygen that a dinosaur would have inhaled with the air during respiration."
A previously unexploited source of information is now throwing new light on Earth's climate during the age of dinosaurs. Fossilized dinosaur teeth show that concentrations of carbon dioxide in the atmosphere during the Mesozoic Era, i.e., 252 to 66 million years ago, were far higher than they are today. This has been determined by researchers at the universities in Göttingen, Mainz, and Bochum following the analysis of oxygen isotopes in the dental enamel of dinosaur teeth.
Oct 1st Thinktober Post:
Mars’ outer core is liquid and its inner core is solid, just like Earth! How do we know this? Using Marsquakes! Seismology allows us to create 3D images of the insides of planets and moons.
“The latest findings indicate the inner core, while small, is indeed solid and surrounded by molten metal — a liquid outer core”.
More data is needed to understand what role this plays in Mars’ current lack of a magnetosphere. InSight, the seismometer we took to Mars, isn’t operating any more so we’re unable to collect more seismic data at this time.
For October I’m going to do “Thinktober”. Is that a corny name? Yes, definitely!
In Thinktober I’m going to share one cool article a day that is somehow related to Earth Science, Astronomy, or Planetary Science. I have a Flipboard magazine that all articles will be saved to, so if you want to subscribe to it and get updates after October you can!
... #thinktober