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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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.
Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
![Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_24_30_2057231.jpeg)
![The basalt below the hominins is dated to 1.8 million years ago, and the geomagnetic polarity of the](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_26_15_20589385.jpeg)