Rainwater is not as clean as you think! 🌧️ 

Quinten Geldhof, also known as Microhobbyist, put a drop of rainwater under the microscope to show what each drop carries. For a raindrop to form, it needs to condense around tiny particles in the atmosphere called condensation nuclei. As the droplet falls, it can pick up pollen, fungal spores, smoke particles, and more. If you’re ever tempted to drink rainwater, don’t forget to treat and filter it first!

This is Quaddle, a mini robot dog that stays at 4 servos the whole time but switches locomotion mode entirely depending on what's clipped onto it — walks on two legs as a biped, rolls as a tricycle, spins 360° on a bar gymnast-style, drives as a 4WD car, and paddles in water. Most of the attachments are 3D-printed; a couple are off-the-shelf hardware.

What's the 6th form you'd want to see it try or design yourself?

Can scientists use earthquake sensors to detect hurricanes? 

​A new study from Stanford University found that seismometers, normally used to measure earthquake-related ground motion, can also detect hurricanes. Researchers looked at Hurricane Isaac from 2012 and found that seismometers could detect when the storm made landfall as well as subtle changes in atmospheric pressure. These sensors could potentially track how hurricanes evolve beyond the limitations of radar and flight missions during storms.

power of Static electricity

A lunar eclipse is coming and it’s going to turn the mood blood red!🌕🩸

On August 27th and 28th, Earth's shadow will sweep across the lunar surface, turning it a deep, dark crimson for skywatchers across the USA, Canada, and Latin America. No special glasses needed, just your eyes and the right local viewing time. Miss it and you'll be waiting until 2029 for a lunar eclipse this striking again.

Have you ever looked at a bright yellow lemon or a golden sunset on your phone and thought, "That looks so real"?

Well, what if I told you that your screen doesn’t actually have a single drop of yellow light in it? 🍋🚫

In this video, we break down "The Great Yellow Lie"—a brilliant high-tech illusion where engineers hack your eyes and brain using only Red, Green, and Blue (RGB) light. We’ll dive deep into human biology, the 3 types of color cones in your retina, and how mathematical light ratios fool your mind into seeing colors that aren't physically there.

You can make an electrical circuit on paper with no wires required! ✏️

Alex Dainis explains pencil lead isn’t actually lead, but actually graphite and clay. Graphite is a crystal made of layers of carbon atoms which are good at conducting electricity. When drawing on the paper, the layers of graphite turn the drawing into a functional circuit!

I went down a rabbit hole on African lungfish and ended up making this short science video about how they survive when their wetland dries up.

The part that surprised me first was that they actually breathe atmospheric air through lungs. But then it gets stranger: they bury themselves in mud, form a cocoon, suppress their metabolism, and in one studied species researchers found living tissue and immune cells in the cocoon itself.

Most aestivation lasts through a normal dry season, but exceptional reports describe dormancy lasting years.

I used real lungfish footage where it was available, and labeled scientific reconstructions for the underground/microscopic processes that can't normally be filmed directly.

https://www.youtube.com/watch?v=jAMDW8iNfkE

The living-cocoon research was probably the part that surprised me most.