How do Massive Sinkholes form?

Every once in a while, you’ll see a news story about a sinkhole that suddenly opens up and causes quite a stir. Although it may seem like these are rare oddities, sinkholes are actually quite common all over the world. Sinkholes go by many names around the world, including sinks, shake holes, swallow holes, swallets, dolines, and cenotes. Although they may be…

The Underwater Post Office

Post Offices are becoming a rarely used medium nowadays for sending and receiving mails. With the advent of electronic mails and messaging mediums like gmail, whatsapp, facebook messenger etc. people find postal letters and mails outdated and old fashioned. But this post office is different from them all. Toshihiko Matsumoto, a postmaster for 40 years in…

Why does your hair turn grey?

As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transparent colour — like grey, silver, or white — as it grows. … People can get grey hair at any age. So, why do we get grey hair in the first place?…

What is Deja Vu?

Déjà vu is a French term which literally means ‘already seen’. As the name suggests, it is a strange feeling that the current situation has happened before. It is an experience in which places seem familiar, although you have visited that place for the first time!! One of the prevailing theories suggests that sometimes, visual…

Why are some people left-handed?

Today, about one-tenth of the world’s population are southpaws. Why are such a small proportion of people left-handed — and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and righties gives insight into a balance between competitive and cooperative pressures on human evolution. Left-handedness is…

Can Plants Think?

There are many different varieties of plants and nearly as many ways to describe them. But aside from the occasional “beautiful,” “lush” or even “prickly” adjective, have you ever attached the word “intelligent” to a plant? Among the biggest revelations is evidence that plants can communicate using a complex system of chemical compounds. These molecular…

Why do golf balls have dimples?

The secret of Golf Balls – Why do they have dimples? About a century ago, after someone realized that a scuffed-up ball travels farther than a shiny new one, balls gained dimples. Now manufacturers invest millions of dollars each year to design better performing golf balls. With no dimples, the ball does not go very…

What Does SPF Mean?

Sunscreen comes in different levels of SPF, or sun protection factor, but what does that mean for your skin and the ultraviolet radiation hitting it? SPF stands for Sun Protection Factor and refers to the theoretical amount of time you can stay in the sun without getting sunburned. For example, an SPF of 15 would allow you…

Why do we Have Earwax?

No Judging: At one point you’ve probably put a finger in your ear and dug out some rather unsightly ear wax, but why does your body produce this yellowy substance in the first place? Ear wax is 20 to 50 percent fat, and it coats the ear canal to moisturize it, fight off infection, and help keep dust,…