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I Learned This Today Blog


ilearnedthistoday.com
I learn one thing every day. There is no reason why I can't find out the answers to the questions that I have, so I do. I write about them on my blog. From when was sliced bread invented to what is the Fermi Paradox? Come and learn with me. You won't regret it.
2024-02-26 13:03
Photo by Pixabay: https://www.pexels.com/photo/brown-corks-on-clear-wine-glass-36741/Where does cork come from? Cork comes from the bark of the cork oak tree. The primary use of cork is t… Read More
2024-02-24 07:50
Photo by cottonbro studio: https://www.pexels.com/photo/smoke-coming-out-of-glass-5546964/Why does dry ice fog sink? The gas from dry ice is more dense than air and therefore it sinks. Dr… Read More
2024-02-23 01:34
Photo by Manuela Adler: https://www.pexels.com/photo/body-of-water-across-forest-949194/How do animals find water? They have many methods. Some animals can smell or sense water. Some animals… Read More
2024-02-21 13:06
Image By https://www.scientificanimations.com – https://www.scientificanimations.com/wiki-images, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=91085787Can you live wit… Read More
2024-02-20 01:53
Photo by Hilmi Işılak: https://www.pexels.com/photo/gray-fighter-plane-on-airport-4311318/How does an ejection seat work? In the simplest sense, they remove the canopy to the plane… Read More
2024-02-19 05:17
Photo by Anthony : https://www.pexels.com/photo/closed-up-photography-of-brown-wooden-framed-sony-speaker-157534/What is the upper limit of a speaker? The loudest speaker ever made produced… Read More
2024-02-17 09:12
Photo by Rajukhan Pathan: https://www.pexels.com/photo/colorful-bird-with-green-shiny-plumage-6543040/Why do some birds have red eyes? Birds with red eyes have a lot of tiny blood vessels in… Read More
2024-02-16 13:40
Photo by Pixabay: https://www.pexels.com/photo/human-in-black-orange-swimming-suit-in-blue-body-of-water-37530/What causes the bends? It is caused by the rapid release of nitrogen gas from t… Read More
2024-02-14 13:00
Photo by Pixabay: https://www.pexels.com/photo/gold-bar-lot-47047/What is a karat? It is a way to measure the purity of gold. (In the UK, karat is spelled as carat – more on that later… Read More
2024-02-13 13:04
Image By Angr – This file has been extracted from another file, Public Domain, https://commons.wikimedia.org/w/index.php?curid=832356What was the Great Stink? It happened in Central Lo… Read More
2024-02-12 04:54
Photo by Raveender Nagaraju: https://www.pexels.com/photo/monorail-in-kuala-lumpur-13459238/How does a monorail balance? The single rail of a monorail train is much wider than a rail on a re… Read More
2024-02-10 03:58
Image By Bongoman – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=3799202Is palm oil bad? It depends. It is bad in terms of health and environmental costs, bu… Read More
2024-02-09 13:10
Photo by urtimud.89: https://www.pexels.com/photo/wreck-of-airplane-10032959/What is survivorship bias? It is when researchers focus on the individuals that have passed a selection process… Read More
2024-02-08 13:11
Image By NOAA/MBARI – http://www.mbnms-simon.org/other/photos/photo_info.php?photoID=417, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1935687How do deep sea creature… Read More
2024-02-07 13:09
Photo by Luci: https://www.pexels.com/photo/a-hand-wearing-white-gloves-holding-an-inhaler-6816451/What is asthma? It is a lung disease where the airflow through the throat becomes restricte… Read More
2024-02-06 12:09
Photo by Leandro Boogalu: https://www.pexels.com/photo/man-wearing-black-tank-top-and-running-on-seashore-1390403/What is VO2 max? The V stands for volume, the O2 for oxygen, and the max for… Read More
2024-02-05 08:59
Photo by Skitterphoto: https://www.pexels.com/photo/sport-alley-ball-game-4192/Why are there ten pins in bowling? Because nine pin bowling was outlawed. Bowling is a very old game because… Read More
2024-02-03 01:18
Image By Senior Airman Brian KellyVIRIN: 170322-F-ZZ999-002E.JPG – https://www.defense.gov/observe/photo-gallery/igphoto/2001813286/, Public Domain, https://commons.wikimedia.org/w/ind… Read More
2024-02-01 13:16
Image By Stefan Zachow for the International Mathematical Union; retouched by King of Hearts – File [1], Public Domain, https://commons.wikimedia.org/w/index.php?curid=2277414What is t… Read More
2024-01-31 13:12
Photo by Jeffry Surianto: https://www.pexels.com/photo/japan-airlines-aircraft-taking-off-19655194/What are V1 and V2 on a plane? V1 is the point where a plane must take off and V2 is the sp… Read More
2024-01-30 13:09
Photo by RDNE Stock project: https://www.pexels.com/photo/confused-man-looking-at-the-laptop-screen-6517090/What is the sunk cost fallacy? It is where people are reluctant to abandon a cours… Read More
2024-01-29 13:28
Image By Arpad Horvath – Own work, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=637353What is a gluon? It is a massless subatomic particle that carries the force that… Read More
2024-01-27 09:11
Photo by KATRIN  BOLOVTSOVA: https://www.pexels.com/photo/brown-wooden-gavel-on-brown-wooden-table-6077326/Why do we say, “pass the bar”? The bar was a physical bar that sep… Read More
2024-01-26 13:39
Photo by Ben Phillips: https://www.pexels.com/photo/grey-shark-swimming-in-blue-waters-4781932/How do sharks sense electricity? With a special organ called the ampullae of Lorenzini. They ar… Read More
2024-01-25 13:09
Photo by Kellie Churchman: https://www.pexels.com/photo/landscape-photograph-of-body-of-water-1001682/What color is the sea? It is technically blue, but that depends on the depth and what pa… Read More
2024-01-24 13:37
By Robert Pittman – NOAA (http://www.afsc.noaa.gov/Quarterly/amj2005/divrptsNMML3.htm]), Public Domain, https://commons.wikimedia.org/w/index.php?curid=1433661Is a killer whale a whale… Read More
2024-01-19 10:40
Photo by Aaron Houston: https://www.pexels.com/photo/view-of-the-ferry-building-san-francisco-6441569/When did daylight savings time start? It started in Canada in 1908. Daylight savings… Read More
2024-01-18 13:18
Photo by Pixabay: https://www.pexels.com/photo/green-plant-sprout-66319/How do some plants move? There are three ways that plants move. Plants can move to face the sun or to move into sunlig… Read More
2024-01-17 13:08
Photo by mali maeder: https://www.pexels.com/photo/assorted-plastic-bottles-802221/Are any plastics biodegradable? Some are, but most aren’t. It depends on what they are made from and… Read More
2024-01-16 07:27
Image By Sarah McGuire, CC BY-SA 2.0,https://commons.wikimedia.org/w/index.php?curid=14170219What is peat? Peat is a layer of partly decomposed organic matter on the surface of a soil. It ha… Read More
2024-01-15 01:29
Photo by Mike Bird: https://www.pexels.com/photo/close-up-photography-of-concrete-tombstones-116909/What is your risk of dying every year? It depends on your gender, age, race, where you liv… Read More
2024-01-13 05:23
Photo by Gonzalo Facello: https://www.pexels.com/photo/close-up-photo-of-person-holding-tennis-racket-and-ball-1432039/Why are tennis scores so peculiar? Nobody seems to know the answer, alt… Read More
2024-01-08 13:11
Photo by Pixabay: https://www.pexels.com/photo/sun-301599/Why is looking at the sun dangerous? Because the UV light can burn a hole in the retinal tissue. If you look at the sun for even… Read More
#825 Euclid – The Father Of Geometry
2024-01-07 06:55
On the Shoulders of Giants #1 Image By Euclid – http://www.math.ubc.ca/~cass/Euclid/papyrus/tha.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1259734Euclid was… Read More
2024-01-05 11:29
Image By John Beniston at en.wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=7588763What is a Luddite? A Luddite is someone who is against new technology, but Luddit… Read More
2024-01-02 06:03
Image By Simon King – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=111021260What are druids? Druids were members of a priestly class in ancient Celtic cultur… Read More
2023-12-29 07:29
Photo by Hugo Heimendinger: https://www.pexels.com/photo/red-and-yellow-flag-close-up-photography-2973304/Why did America lose the Vietnam War? Because the Vietnamese were experienced, were… Read More
2023-12-28 02:51
Photo by Mehmet Turgut  Kirkgoz : https://www.pexels.com/photo/elderly-woman-using-a-spinning-wheel-11428921/What is a spinning jenny? It is a machine that can spin cotton into multiple… Read More
2023-12-27 01:57
Image By Unknown, circa 1911 – http://www.cqout.com/item.asp?id=4872846, Public Domain, https://commons.wikimedia.org/w/index.php?curid=16857770What was the workhouse? It was a place w… Read More
2023-12-26 08:40
Photo by MYKOLA OSMACHKO: https://www.pexels.com/photo/gold-kettle-pouring-hot-water-on-cup-of-tea-230477/What is tea? It is a drink made from pouring hot water over tea leaves, which come f… Read More
2023-12-25 03:42
Photo by Sean P. Twomey: https://www.pexels.com/photo/santa-sitting-on-a-green-sofa-19425652/How old is Santa? He is either 1,753, 500, or 202 years old, depending on how you look at it. Man… Read More
2023-12-22 09:58
Photo by Sippakorn Yamkasikorn: https://www.pexels.com/photo/earthworms-on-a-persons-hand-3696170/What do worms do? They break down organic matter in the soil and release the nutrients in th… Read More
2023-12-20 11:23
Photo by Karolina Grabowska: https://www.pexels.com/photo/hands-of-a-person-holding-a-gold-bullet-and-a-pistol-5202384/Who were Smith and Wesson? They were both inventors, gunsmiths, and bus… Read More
2023-12-19 12:07
Photo by Pixabay: https://www.pexels.com/photo/gray-and-black-galaxy-wallpaper-2150/Can a binary star system have planets? Yes. There are two types. There are circumbinary planets that orbit… Read More
2023-12-18 12:54
Photo by Pixabay: https://www.pexels.com/photo/brown-field-and-blue-sky-46160/Why are clouds white? Because the water particles in the clouds scatter light equally. When light comes out o… Read More
2023-12-15 13:16
Photo by cottonbro studio: https://www.pexels.com/photo/black-and-white-cow-on-green-grass-field-4919685/Do cows only eat grass? Wild cows and cows that graze on pasture eat a lot of grass… Read More
2023-12-14 13:41
Photo by Suzy Hazelwood: https://www.pexels.com/photo/close-up-photo-of-sugar-cubes-in-glass-jar-2523650/Why is artificial sugar sweet? Because they have molecules that fit into the sweetnes… Read More
2023-12-13 13:18
Photo by Kindel Media: https://www.pexels.com/photo/for-sale-sign-on-green-grass-lawn-7578849/What is a subprime mortgage? It is a mortgage given to someone with a low credit rating who is t… Read More
2023-12-12 13:05
Photo by Timo Volz: https://www.pexels.com/photo/piles-of-salt-in-salinas-7855174/How is salt mined? In the same way that any other mineral is mined. There are three ways of producing salt… Read More
2023-12-10 04:57
Image By Vitaly V. Kuzmin – http://vitalykuzmin.net/?q=node/446, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=19003170How does a missile shield work? Attacking missile… Read More
2023-12-09 03:25
Why does a cracked whip make a sound? One portion of the whip moves faster than the speed of sound, creating a sonic boom. A sonic boom is created by anything that goes faster than the sp… Read More
2023-12-07 11:13
Photo by Andres  Ayrton: https://www.pexels.com/photo/anonymous-obese-lady-touching-stomach-in-gym-before-workout-6551130/How do weight loss drugs work? They either reduce the appetite… Read More
2023-12-05 13:56
Photo by Pierre Miyamoto: https://www.pexels.com/photo/eurasian-beaver-on-a-wood-12899887/Why do beavers build dams? To make a deep pond that they can live in. Beavers are rodents and the… Read More
2023-12-04 10:41
Photo by Anthony : https://www.pexels.com/photo/two-black-ducks-on-grass-lawn-133625/What is a black swan event? It is a completely surprising and unpredictable event that has major conseque… Read More
2023-12-03 05:43
Image By ESA/Hubble, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=76167204Are all stars inside galaxies? No. There are some stars that are not part of a galaxy. Stars can form… Read More
2023-11-29 12:19
Photo by John Napier : https://www.pexels.com/photo/black-and-white-bird-on-brown-tree-branch-10286262/Why do woodpeckers peck wood? They are trying to find food, mark their territory, find… Read More
2023-11-28 12:31
Photo by Joseph Phillips: https://www.pexels.com/photo/sydney-opera-house-sydney-australia-3753589/How can opera singers sing so loud? By training their diaphragm, their lungs, using their m… Read More
2023-11-27 12:06
Image By Tim Evanson – https://www.flickr.com/photos/timevanson/45708566502/, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=74203950How did a pterodactyl fly? By jumpin… Read More
2023-11-25 12:36
Photo by TonyNojmanSK: https://www.pexels.com/photo/an-aerial-shot-of-the-city-of-florence-in-italy-13173096/Why did Michelangelo hide in a cellar? He had been sentenced to death by Pope Cle… Read More
2023-11-24 12:25
Photo by Gantas Vaičiulėnas: https://www.pexels.com/photo/white-moon-on-hands-3278643/ How does cold reading work? It is a method of reading a person you don’t know in order… Read More
2023-11-21 11:05
Photo by Shvets Anna: https://www.pexels.com/photo/man-and-woman-across-mummies-2570068/How was a mummy made? Along with many other steps, a mummy was made by emptying the body, preserving a… Read More
2023-11-20 13:47
Photo by Kevin Bidwell: https://www.pexels.com/photo/two-men-standing-beside-brown-wooden-cabinet-2386728/What are “Spaghetti Westerns”? They are Westerns that were filmed in Ita… Read More
2023-11-19 04:42
Photo by Mr Flame: https://www.pexels.com/photo/man-in-black-jacket-10358765/How does an e-cigarette work? It uses a battery to heat an element that vaporizes a solution of liquid nicotine w… Read More

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