« previous next »
« previous next »
 

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Past and current ranges of the grizzly bear. Past and current ranges of the grizzly bear.
A grizzly bear in Yellowstone National Park. A grizzly bear in Yellowstone National Park.
People who share genes will often have similar body weights People who share genes will often have similar body weights
Capital’s Share of Income in a Cross-Section of Countries Capital’s Share of Income in a Cross-Section of Countries
Mammoths – Larger Cenozoic Mammals Mammoths – Larger Cenozoic Mammals
Video: Labor and Childbirth - The Three Stages of Labor: Dilation, Expulsion & Placental مراحل الولادة

For a complete list of videos, visit our video library