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An estimated 20 million cases of blindness worldwide are caused by cataracts, a curable condition affecting the lens that focuses images onto the eye’s retina. A cataract occurs when proteins in the lens lose their normal arrangement, clumping together in a way that causes discoloration or clouding, and eventually blocks most vision. Cataracts can be …
A curable condition that causes blindness – Andrew Bastawrous 더 보기 »
Have you ever been gazing at a starry sky when suddenly a bright dot glided into view? If it wasn’t blinking, then you’ve had the distinct pleasure of seeing one of mankind’s greatest collaborative feats with your own eyes: The International Space Station. Roughly the size of six-bedroom house, and weighing more than 320 cars, …
The incredible collaboration behind the International Space Station – Tien Nguyen 더 보기 »
If you’ve watched the news or followed politics chances are you’ve heard the term Orwellian thrown around in one context or another. But have you ever stopped to think about what it really means, or why it’s used so often? The term was named after British author Eric Blair known by his pen name George …
You and nine other individuals have been captured by super intelligent alien overlords. The aliens think humans look quite tasty, but their civilization forbids eating highly logical and cooperative beings. Unfortunately, they’re not sure whether you qualify, so they decide to give you all a test. Through its universal translator, the alien guarding you tells …
Can you solve the prisoner hat riddle? – Alex Gendler 더 보기 »
Translator: Jennifer Cody Reviewer: Jessica Ruby When faced with a big challenge where potential failure seems to lurk at every corner, maybe you’ve heard this advice before: “Be more confident.” And most likely, this is what you think when you hear it: “If only it were that simple.” But what is confidence? Take the belief …
In medieval times, alchemists tried to achieve the seemingly impossible. They wanted to transform lowly lead into gleaming gold. History portrays these people as aged eccentrics, but if only they’d known that their dreams were actually achievable. Indeed, today we can manufacture gold on Earth thanks to modern inventions that those medieval alchemists missed by …
Packed inside every cell in your body is a set of genetic instructions, 3.2 billion base pairs long. Deciphering these directions would be a monumental task but could offer unprecedented insight about the human body. In 1990, a consortium of 20 international research centers embarked on the world’s largest biological collaboration to accomplish this mission. …
Where did Russia come from, why is it so big, and what are the differences between it and its neighbors? The answers lie in an epic story of seafaring warriors, nomadic invaders, and the rise and fall of a medieval state known as Kievan Rus. In the first millennium, a large group of tribes spread …
The idea of human rights is that each one of us, no matter who we are or where we are born, is entitled to the same basic rights and freedoms. What are human rights Human rights are not privileges, and they cannot be granted or revoked. They are inalienable and universal. That may sound straighforward …
What are the universal human rights? – Benedetta Berti 더 보기 »
A handful of species on Earth share a seemingly mysterious trait: a menstrual cycle. We’re one of the select few. Monkeys, apes, bats, humans, and possibly elephant shrews are the only mammals on Earth that menstruate. We also do it more than any other animal, even though its a waste of nutrients and can be …
