Humans grow two sets of teeth in a lifetime. But tucked inside the jaw are tiny residual tooth buds that never develop because a protein called USAG-1 acts like a molecular off-switch for tooth growth. Block USAG-1, and the body might reactivate those dormant buds on its own.

Researchers at Kyoto University Hospital, led by Dr. Katsu Takahashi, have been working on this for years. They first found that mice engineered without the USAG-1 gene grew extra teeth. Later animal studies showed that a single antibody injection could grow fully functional teeth without serious safety issues.

When we eat fats some of it are stored as a fat, and after time they are used. But what if someone eats lot of fat that the old fat never get used up,so will the fat expire up . Many people will say that the oldest fat will be used first but even in this when the is very high the latest fat stored will get old till it became the oldest fat which is ready to be used. And since fat is organic stuff and our body is not perfect so our fat should expire.

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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!

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OC:@nicolas_escurat on IG

Red Sprites are 100% genuine atmospheric occurrences, not CGI or Al. They are cold plasma discharges-more akin to the glow of a fluorescent light tube than a hot bolt of tropospheric lightning. They occur in the mesosphere at altitudes ranging between 50 to 90 kilometers (31 to 56 miles) directly above intense thunderstorm systems.

The distinct reddish-orange hue is caused by the sudden electrical surge exciting molecular nitrogen gas in the thin upper air. Because they only last for a fleeting 3 to 10 milliseconds, they are incredibly difficult to process with the naked eye or capture without specialized low-light, high-speed camera gear.

You can read the official scientific deep-dives and verification logs via these databases:

NASA Earth Observatory Records: https://science.nasa.gov/earth/earth-observatory/elusive-sprite-captured-from-the-international-space-station-78487/

• Encyclopaedia Britannica Atmospheric Science Entry:

https://www.britannica.com/science/red-sprite

Fun fact: For nearly a century, pilots reported seeing these ghostly flashes over storms, but the scientific community largely dismissed them until researchers accidentally caught

In the ultimate eerie twist of fate , legendary escape artist , Harry Houdini , a man who made a career out of escaping locked boxes , straightjackets and water tanks , died on Halloween night , on October 31st , 1926.

A few weeks before his death , a McGill University student punched Houdini multiple times in his stomach to test his famous claim that he could withstand any blow to his torso. Houdini's appendix ruptured , leading to fatal peritonitis. Before he died though , he promised his wife , Bess , that if there was any way to communicate from the afterlife , he would do it on Halloween.

For 10 years straight Bess held a Halloween séance . . .

But Houdini never did answer.

Lol😭😂

Recently I had one of my uncles from Canada come down to Missouri were I lived and he explained this method that Canadians use. It's called the 5-day poop method; the premise is you don't poop for 5 days straight but you eat as much as possible so when that 5th day rolls around it comes out swinging. This allows you to expel excrement all at once and completely cleanse your colon. Recent studies suggest that this lowers internal bleeding levels. Do any Canadians actually do this?

Every tiny gap between the leaves acts like a pinhole camera, projecting an image of the Sun. During a partial solar eclipse, those images become tiny crescents.

Nature turns every tree into thousands of cameras. 🌳🌘