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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.
#925 What Is A Zombie Virus?
2024-04-17 11:46
Image By Boris Radosavljevic – https://www.flickr.com/photos/139918543@N06/24532258070/, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=80427880What is a zombie virus? Zomb… Read More
#921 How Does A Rattlesnake Rattle?
2024-04-14 05:21
Photo by Pixabay: https://www.pexels.com/photo/diamond-back-rattle-snake-36714/How does a rattlesnake rattle? They have loose hollow scales on the tips of their tails that strike each other… Read More
#921 How Much Oil Is Left?
2024-04-13 08:59
Photo by Tom Fisk: https://www.pexels.com/photo/panoramic-view-of-oil-refinery-6767962/How much oil is left? About 1.5 trillion barrels, which is enough oil for roughly 47 years. There ar… Read More
#920 What Are El Nino And La Nina?
2024-04-12 13:05
Photo by Genaro Servín: https://www.pexels.com/photo/person-riding-a-bicycle-during-rainy-day-763398/What are El Nino and La Nina? They are climate patterns that happen in the Pacific… Read More
How Do Birds Land?
2024-04-11 13:14
Photo by Sachin Nihcas: https://www.pexels.com/photo/timelapse-of-a-bird-landing-on-a-branch-5814467/How do birds land? It depends on the size of the bird and whether it is a landing on land… Read More
When Does History Start?
2024-04-09 12:52
Pointe de flècheWhen does history start? This is a difficult question, but we have prehistory, protohistory, and then history. Protohistory is the point where prehistory becomes histo… Read More
#916 How Does A Bicycle Stay Upright?
2024-04-08 13:13
Photo by Andrea Piacquadio: https://www.pexels.com/photo/man-in-black-suit-riding-bicycle-down-the-street-1843752/How does a bicycle stay upright? It is a combination of things, but nobody s… Read More
#913 What Is Racketeering?
2024-04-05 12:54
Photo by cottonbro studio: https://www.pexels.com/photo/man-smoking-cigarettes-5920578/What is racketeering? It is a criminal act that usually involves extortion or a scheme to extract illeg… Read More
#912 Why Does Sunburned Skin Peel?
2024-04-04 13:14
Image By Phil Kates – https://www.flickr.com/photos/hawk684/108139247/, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=51031248Why does sunburned skin peel? It peels bec… Read More
#911 What Causes An Epileptic Seizure?
2024-04-03 05:48
Photo by MART  PRODUCTION: https://www.pexels.com/photo/technology-computer-head-health-7089020/What causes an epileptic seizure? It is caused by abnormal electrical activity in the bra… Read More
#910 What Is A Metal?
2024-04-02 06:22
Photo by Pixabay: https://www.pexels.com/photo/black-and-gold-machine-60064/What is a metal? A metal is any material that readily loses its outer shell electrons, can be polished to be highl… Read More
#906 Is Moss One Plant Or Many Plants?
2024-03-29 06:34
Photo by Daniel B: https://www.pexels.com/photo/photo-of-trees-covered-in-moss-141233/Is moss one plant or many plants? A patch of moss is made up of many moss plants. There are many type… Read More
#904 Why Do We Hiccup?
2024-03-27 13:18
Image By In source box put https://www.scientificanimations.com – In source box put https://www.scientificanimations.com/wiki-images, CC BY-SA 4.0, https://commons.wikimedia.org/w/inde… Read More
Why Does Hair Turn White?
2024-03-26 13:38
Photo by cottonbro studio: https://www.pexels.com/photo/elderly-couple-smiling-together-7236499/Why does hair turn white? The pigment cells in the hair follicles die. Our hair is colored… Read More
#899 What Is A Crusade?
2024-03-22 13:26
Photo by Haley Black: https://www.pexels.com/photo/white-concrete-building-2087387/What is a crusade? It is a Catholic expedition called forth by the pope for various religious purposes. If… Read More
#898 What Is The Golden Ratio?
2024-03-21 13:14
Image By Romain – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=114415511What is the golden ratio? It is 1.618. The golden ratio appears in nature, in art… Read More
2024-03-19 14:00
Image By Sergiodlarosa – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=71545069How big was a Megalodon? The largest ones could have been 20 meters long. Me… Read More
2024-03-14 13:21
Image By Unknown author – Musei Vaticani (Stato Città del Vaticano), Public Domain, https://commons.wikimedia.org/w/index.php?curid=49885704What is the Ides of March? It is the… Read More
2024-03-13 13:17
Image By moi-même – Self-photographed, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1475134Why are truffles so expensive? They are very rare and very difficult… Read More
2024-03-12 13:17
Photo by Karolina Grabowska: https://www.pexels.com/photo/selective-focus-of-a-bitcoin-on-laptop-computer-5980743/What is Bitcoin? It is the original, and the most famous, digital currency… Read More
2024-03-11 13:23
Image By Lt. Col. Leslie Pratt – MQ-9 Reaper UAV.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=68095681When was the first drone? The first real drone was built in… Read More
2024-03-08 08:22
Photo by Leon Natan: https://www.pexels.com/photo/photo-of-the-national-flag-of-israel-6851497/How did Israel end up where it is? The British government had the idea to create a Jewish homel… Read More
2024-03-07 13:12
Photo by Sides Imagery: https://www.pexels.com/photo/boxers-inside-a-ring-3531081/What are the Queensberry rules? They are the rules for boxing published in 1867 and endorsed by the 9th Marq… Read More
2024-03-05 13:03
Image By National Archives Photo – Social Security History Site, Public Domain, https://commons.wikimedia.org/w/index.php?curid=374093What caused the Great Depression? There are many c… Read More
2024-03-04 12:31
Image By Attributed to Leonardo da Vinci – http://www.originaldo.com/monacomp2.jpeg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=9423997Who painted the Isleworth Mon… Read More
2024-03-02 13:47
Image By User:Staecker – Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=658367What happened to the Aral Sea? The Soviet Union diverted the rivers that fed it… Read More
2024-03-01 06:30
Photo by Pixabay: https://www.pexels.com/photo/person-holding-paintbrush-221027/What does paint primer do? It helps paint stick to the surface, it helps the paint last longer, and it protect… Read More
2024-02-29 13:08
https://www.timeanddate.com/calendar/monthly.html?year=2024&month=2&country=26Why do we have a leap year? We have a leap year because the calendar year doesn’t exactly match th… Read More
2024-02-28 13:00
Photo by tyler hendy: https://www.pexels.com/photo/titrist-golf-ball-near-golf-hole-54123/Why does a golf ball have dimples? They make the ball go further. Golf balls didn’t always… Read More
2024-02-27 13:44
Photo by Bl∡ke  : https://www.pexels.com/photo/drone-shot-of-fisher-body-plant-21-in-detroit-michigan-9599945/What happened to Detroit? The city declared bankruptcy in 2013, with… Read More
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
2024-01-26 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

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