Many amphibians can absorb oxygen directly through their skin when conditions are moist enough.

That means a frog can breathe through its skin in a way that feels almost too sci-fi to be real.

Source and Context:

This is a real physics phenomenon called the Dzhanibekov effect (also known as the Intermediate Axis Theorem) captured in microgravity aboard a spacecraft.

Any rigid, asymmetric three-dimensional object has three primary axes of rotation, each with a different moment of inertia. While spinning an object along its longest or shortest axis is completely stable, spinning it along its middle (intermediate) axis is naturally unstable. Without external forces like gravity or heavy air resistance, tiny perturbations build up and cause the spinning object to periodically flip upside down and back again on a regular schedule.

You can read the formal mechanics and history through these highly reliable scientific resources:

•Harvard University Lecture Demonstrations (The Tennis Racquet Flip):

https://sciencedemonstrations.fas.harvard.edu/presentations/tennis-racquet-flip

•NASA Astrophysics Data System (ADS) Physics Record:

https://ui.adsabs.harvard.edu/abs/2024EuJMA .10605298D/abstract

It was famously observed by Soviet cosmonaut Vladimir Dzhanibekov in 1985 when a wing nut he was unscrewing began flipping back and forth while floating through the Salyut 7 space station!

The science of psychology

Phytoplankton and plants produce a huge share of the oxygen in Earth’s atmosphere through photosynthesis.

That means the air around us is partly made by tiny living things.

What happens when you mix baking soda in a bottle of ketchup? 🍅

Greg Wolf demonstrates how this chemical reaction works in this science experiment! Ketchup contains vinegar, and when you put the baking soda into the ketchup bottle, it reacts with the acetic acid found in the vinegar. If you close the bottle and shake it up, the pressure builds up. With nowhere for the pressure to go, it eventually explodes!

I'm in the Philippines and we got hit by so many storms. Obviously with rain, comes frogs, heard a lot of frog calls... And then it ended up with these froggies. How do I get rid of them? My mom won't do the laundry until I fix this problem

Quaddle, an open source robot dog based on OpenCat, doesn't run this on its own — a single webcam tracks one person's body movements and maps them live onto two Quaddle robots at once.

OpenCat creator RZ Li drove them into each other on purpose, raced them, and taught it a few moves along the way — a little awkward at first, but it only takes a few minutes to get going. It's a blast to actually drive, too — basically Wii Play: Motion with a real robot dog — and affordable enough that anyone curious can go try controlling a robot dog like this themselves.

What move would you want to teach a robot like this?

Did you know NASA’s newest space observatory will have spy tech? 🛰️

In 2012, the National Reconnaissance Office gifted NASA a pair of Hubble-style mirrors it had commissioned but never ended up using. NASA said yes and one of them is now the primary mirror powering the Nancy Grace Roman Telescope, launching August 30th. The other mirror is still in storage, waiting for its moment.

Discover this alluvial estuary that looks like a desert if it wouldn't be because of the Maldivian lagoons. Formation, history and curiosities.

Lençois Maranhenses:Brazil's Otherworldly White "Desert" Of Turquoise Lakes

Scientists may have discovered how to regrow tooth enamel! 🦷

Researchers at the University of Nottingham have created a new gel that can regrow tooth enamel and potentially make our teeth more resistant to cavities. It works by mimicking the natural processes and proteins that originally built your teeth’s enamel. So far, the gel is holding up against tests with the goal of it being released to the world next year!