What the First Year of Life Looks Like Through the Eyes of a Baby

iStock
iStock

A baby's vision undergoes a series of significant developments during its first year of life, and these developments have been visually replicated, month by month, in a recent video from Tech Insider.

The unfortunate news for any parent who has ever felt like their newborn was gazing into their eyes: Until the third month, babies can't actually identify facial features, which include eyes and mouths. Also, they can't focus their eyes on any subject more than 10 inches from their face for the first three months.

At the 6-month mark, babies are finally able to construct a 3D view of the world—something that later comes in handy at 9 months, when their eye-hand coordination is finally developed enough to grab hold of objects.

Though humans' eyes aren't fully developed until age 2, babies do have a leg up on adults in one area: A 2016 study found that babies between the ages of 3 and 4 months old can see slight differences in images caused by changes in illumination, while adults cannot.

Watch the video from Tech Insider below:

[h/t: Tech Insider]

The Palos Verdes Blue: The Beautiful Butterfly That Wasn't Extinct After All

U.S. Fish and Wildlife Service, Wikimedia // Public Domain
U.S. Fish and Wildlife Service, Wikimedia // Public Domain

Terrible extinction news frequently makes the headlines, but sometimes, conservationists declare defeat too early. The Palos Verdes blue (Glaucopsyche lygdamus palosverdesensis) is one such example: Presumed extinct in 1983 after it seemed to vanish from its habitat in California's Palos Verdes Peninsula, it was discovered flitting among the grass in San Pedro again 11 years later.

Aside from coming back from the edge, the butterfly is notable for fuzzy wings that look brownish when closed, but a stunning silvery blue once they open up. Today it's still listed as threatened, but there's a captive breeding program to help make sure the beautiful species never goes missing again. Learn more—and see the butterfly up-close—in the video from Great Big Story below.

Why Cutesy Names Are the Most Effective Way of Getting Your Cat's Attention

iStock
iStock

When you were naming your cat, you probably didn’t consider your feline friend’s hearing range. But according to Vancouver, Canada-based veterinarian Uri Burstyn, you probably should have—at least if you want your cat to pay attention when you talk to it.

According to Dr. Uri, the name he goes by in his adorable YouTube videos, Felix isn’t a great cat name. Nor is Garfield. But Fluffy? A great choice.

Cat ears are finely attuned to high-pitched noises. Since most of their prey communicate at high frequencies—think mouse squeaks and bird chirps—cats are not as good at hearing low-frequency sounds. Ideally, you want your cat’s name to end in a high frequency, since that’s the kind of sound cats hear best and naturally pay attention to.

For human speech, that basically means that it should end in an “eeeee” sound rather than a consonant. Grumpy Cat? A bad name. Just “Grumpy?” Perfect. That's why "kitty kitty" works pretty well to get a cat to pay attention or come toward you. It's a squeaky sound.

Luckily, many nicknames in English tend to end in an ie or a y, so you probably already have a cat-friendly name for your pet waiting in the wings. Now you know why your cat is more likely to respond to your high-pitched, baby-voiced nicknames than its full name.

Enjoy Dr. Uri's explanation, and his helpful demonstration with his noble friend Lancelot, in the video below.

SECTIONS

arrow
LIVE SMARTER