|
|
Did you know?
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Did you know?
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
![Hong Kong is a strange situation. A British colony since 1842, it was handed back to China in 1997 a](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_46_34_221901097.png)
![A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan](https://biology-forums.com/gallery/47/medium_27_24_08_15_1_27_03_22389406.jpeg)