|
|
Did you know?
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Did you know?
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
Did you know?
According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
![Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f](https://biology-forums.com/gallery/47/medium_375348_18_08_15_9_36_28_22295845.jpeg)
![In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward,](https://biology-forums.com/gallery/47/medium_375552_19_08_15_9_09_49_223041222.jpeg)