ScienceIQ.com

What's So Funny?

There's an oft-repeated scientific definition of laughter as one or more forcibly voiced, acoustically symmetric, vowel-like notes (75 ms duration) separated by regular intervals (210-218 ms), and a decrescendo. That's pretty precise. Humor, on the other hand, is much harder to define. You can't really understand a complex cognitive construct like ...

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Laughter
Biology

The Red-Cockaded Woodpecker

In the mid-l800s, naturalist John Audubon reported that the red-cockaded woodpecker was found abundantly in the pine forests of the southeastern United States. Historically, this woodpecker's range ... Continue reading

TheRedCockadedWoodpecker
Biology

What Gives Hair Its Color?

Put a single hair under a microscope, and you'll see granules of black, brown, yellow, or red pigment. What you are seeing are tiny particles of melanin, the same pigment that gives skin its color. ... Continue reading

WhatGivesHairItsColor
Biology

Gestation Periods of Mammals

Gestation period is the time from fertilization to the actual birth in animals. In humans this period is 266 days or approximately 9 months. ... Continue reading

GestationPeriodsofMammals
Geology

Why Don't We Try To Destroy Tropical Cyclones?

There have been numerous techniques that we have considered over the years to modify hurricanes: seeding clouds with dry ice or Silver Iodide, cooling the ocean with cryogenic material or icebergs, ... Continue reading

TropicalCyclones

Does Your Beagle Have A Belly Button?

BeagleBellyButtonOur navels, also know as belly buttons, are scars left over from our umbilical cords. While in the mother's womb, a baby receives food and oxygen and rids itself of waste through the umbilical cord. One end of the umbilical cord is attached to the mother's placenta, an organ that develops during a mother's pregnancy for this very special job. The other end is attached to the baby's stomach. As soon as the baby is born and begins breathing on its own, the umbilical cord is cut. After a few weeks, the remains of the cord wither away. All that remains is the navel.

But does your dog have a belly button? Or a better question is, have you ever seen it if it does? Most people haven't. But this doesn't mean that it doesn't exist. Since mammals give birth to live young, they share in common the process of developing inside their mother. This, by necessity, requires a connection between the mother and the baby for the passing of nourishment, oxygen and clearing away waste. Dogs and cats are no different. Although each is born in a fluid-filled sac, it is still connected to its mother's placenta by an umbilical cord. In fact, a mother dog will bite and break each puppy's umbilical cord right after birth. Soon, just like us, all that's left is a scar.

Puppies don't have obvious belly buttons for a few reasons. The size of their umbilical cord is small. Sustaining a human baby requires a bigger umbilical cord, hence a bigger scar. A puppy's scar heals into a small slit rather than a round hole. And the area is quickly covered with fur, making detection more difficult. So next time your dog is taking a snooze on her back, take a look. With some investigation, you'll find its belly button.