“There’s something called Blindsight, where people have no perception of vision yet their brain responds to visual stimuli. One way they tested this was showing angry faces and measuring a physiological response in the person. Also the people will unconsciously avoid obstacles in their way when walking.”
“There are actually blood vessels obstructing light from reaching certain areas in your eye, effectively creating a shadow. Your brain filters this out and essentially fills in the gaps so you don’t actually see this spiderweb-like network of black lines. However, you can visualise them by shining a light at a diagonal into your eye (not directly!) and gently wiggling it about. This means your brain doesn’t have enough time to filter it out and you see this spiderweb like network of blood vessels!’
“All matter literally gives off light, but we can only see a sliver of that spectrum (although we do have tools to help us see other spectrums.)”
“Caterpillars basically dissolve into liquid in the cocoon. The only thing left are the so called ‘imaginal discs’, groups of cells that contain all the information and the mechanism to turn that soup into the various body parts of a butterfly (the same applies for other insects).”
“If some sort of super-advanced alien species on a planet 80 million light years away from Earth built a high-tech telescope that let them see objects on the Earth’s surface, they would be seeing dinosaurs right now.”
“T-rex lived 66million-ish years ago. Stegosaurus lived 155million-ish years ago. The gap between rex and stego is 16million-ish greater than between rex and present day.”
“GPS calculations would be off by several miles if they used Newtons formulas instead of Einsteins theory of relativity.”
“If you put 1 of every animal in a bag and then pick one out you have a 1/5 chance in picking a beetle”
“Slime molds don’t have brains or nervous systems but some how retain information and use it to make decisions. Even more crazy is that they can fuse with another individual and share the information”
“Every star can be thought of as an enormous nuclear explosion held in place by its own gravity.”
“There are 8 times as many atoms in a teaspoonful of water as there are teaspoonfuls of water in the Atlantic ocean”
“Approximately 99.85% of all the mass in the solar system is concentrated in The Sun.”
“If 2 pieces of the same type of metal touch in space, they will bond and be permanently stuck together. Space welding ( cold welding )”
“Passing a magnet through a metal coil creates an electric charge. Or, by working backwards, passing an electric charge through a metal coil around an object turns it into a magnet.”
“The size of animals still blows my mind. You can read about how a manta ray is 23 feet long and 3 tons but it doesn’t really hit you until you realize that’s heavier than most cars”
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"Life That Glows" by Sr David Attenborough is amazing to see.
Lots of animals give off light. Humans too.