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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
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.
![Old-growth redwood forest in western North America. Redwoods are the tallest trees in the world, wit](https://biology-forums.com/gallery/47/medium_33_28_08_11_12_01_59_15502383.jpeg)
![The Blue-bearded Bee-eater Nyctyornis athertoni is a large species of bee-eater found in South Asia.](https://biology-forums.com/gallery/47/medium_12359_29_04_12_6_13_32.jpeg)