Why do we need glasses?

Why did the dinosaurs go extinct? Many of you have learned about the meteorite that scientists say hit the earth 66 million years ago and killed off many dinosaur species. But some dinosaurs survived, and the birds you see flying around today are their direct descendants! In this ...  عرض المزيد

Why are brothers and sisters so annoying? Why do siblings often look a lot alike? Why do siblings fight? Can your sister be your best friend? Why do we fight with our siblings even if we love them? But Why takes a look at the sibling relationship with Susan Dominus, author of The ...  عرض المزيد

"Over half of Americans wear corrective glasses or contact lenses. While there isn’t a shortage of low-cost and luxury frames available online or in stores, consumers can only buy them with a current eyeglass prescription. That means that they first need an eye exam from an optom ...  عرض المزيد

Have you ever woken up in the morning with the corners of your eyes filled with crud? Sleepy sand? Eye goblins? Dozy dust? Bed boogers? Why do our eyes make this stuff, anyway? And why does it build up when we’re asleep? We asked Yale eye doctor Soshian Sarrafpour to help us get ...  عرض المزيد

Unser Mitglied Palin hat sich gewünscht, dass wir einmal über Brillen und Kontaktlinsen sprechen. Wir starten mit den Erinnerungen an unsere ersten Brillen und erklären den Unterschied zwischen Augenarzt und Optiker. Manuel erzählt, warum er Brillen lieber online kauft, auf we ...

How does reading work in the brain? It’s a question that has fascinated scientists for years. Could braille - the system of raised dots that blind and low vision people use to read - be the key to understanding how it works? We talk to writer Andrew Leland (“The Country of the Bl ...  عرض المزيد