Why is it so challenging to treat the common cold?
Dig into the two main ways we fight the viruses that cause the common cold, and find out if it’s possible to create a cure. --On average, adults catch more than 150 colds throughout their lives. Even with similar symptoms, the cause could be different each time. Common colds are caused by at least …
Why did three popes reign at once? - Joëlle Rollo-Koster
Dig into the history of the Papal Schism, which caused a split in the Catholic Church while 3 popes vied for supremacy. --For almost two millennia, the Pope has been a figure of supreme spiritual authority for Catholics around the world. But in the late 14th century, Catholics found themselves with…
Can other animals perceive death? - Barbara J. King
Do nonhuman animals experience grief? Explore mourning in the animal kingdom to find out the answer to this tricky question.--In 2018, an orca called Tahlequah gave birth. But her daughter died within an hour. Tahlequah, however, didn’t leave her body. Over the next 17 days and 1,600 kilometers, sh…
The maladies that altered humanity forever - Dan Kwartler
Explore the history of humanity’s deadliest diseases, and find out how our progress and innovation exposed us to new pathogens.--Since humanity’s earliest days, we’ve been plagued by countless disease-causing pathogens. Invisible and persistent, these microorganisms and the illnesses they incur hav…
The mystery of how Chinese characters operate - Gina Marie Elia
Trace the history of Chinese characters, and find out how this writing system has changed and evolved over thousands of years.--According to legend, in the 27th century BCE, the Yellow Emperor of China charged his historian, Cangjie, to develop a system of writing. Sitting alongside a riverbank, Ca…
How clever are crows? - Katharina Brecht
Learn more at https://brilliant.org/TedEd --In one of Aesop’s fables, a crow is searching for water. It spies a pitcher— but the water inside is beyond its reach. So, the crow begins dropping in pebbles. One-by-one, they displace the water, and the crow quenches its thirst. This is just one of many…
How long can your hair grow? - Maksim Plikus
Dig into what biological factors influence hair growth, how it can change as you age, and how to take control of your scalp.--At age 44, Xie Qiuping cut her hair for the first time in over three decades. Her impressive locks extended over 5 meters — earning the Guinness World Record for the world’s…
The big-beaked, rock-munching fish that protect coral reefs - Mike Gil
Discover the quirky creature known as the parrotfish, and the key role it plays in keeping coral reefs healthy and thriving. --As the sun rises over a quiet coral reef, one animal breaks the morning silence. Named for its vibrant scales and beak-like teeth, the parrotfish devours a particularly cru…
Why isn’t the Netherlands underwater? - Stefan Al
Dig into the incredible engineering of the Netherlands’ Delta Works— the most sophisticated flood prevention system in the world. --In January 1953, a tidal surge shook the North Sea. The titanic waves flooded the Dutch coastline, killing almost 2,000 people. 54 years later, a similar storm threate…
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