|
|
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Your heart beats over 36 million times a year.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.
![Model of a longitudinal study in which 983 students were surveyed in 1984 and then again in 1985, 19](https://biology-forums.com/gallery/47/medium_6_31_05_15_8_20_42_219721459.jpeg)
![Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ...](https://biology-forums.com/gallery/47/medium_660365_23_12_16_3_52_06_24360827.jpeg)
![Every culture has funeral rituals that help its members mark the passing of one of their own and ...](https://biology-forums.com/gallery/27/medium_660366_08_04_17_10_05_21_275681279.jpeg)
![Patients with celiac disease must maintain a gluten-free diet. Many gluten-free items are widely ...](https://biology-forums.com/gallery/31/medium_398119_12_07_17_5_39_29_316531801.jpeg)