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Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Inheritance of gender. Inheritance of gender.
Gene duplication and mutation: one path to generate new enzymatic activities Gene duplication and mutation: one path to generate new enzymatic activities
Both humans and apes readily engage in learned imitative behavior. Both humans and apes readily engage in learned imitative behavior.
Barbara Kruger, Untitled (We won't play nature to your culture). Barbara Kruger, Untitled (We won't play nature to your culture).
Dramatic growth of algae in water treated with phosphate Dramatic growth of algae in water treated with phosphate
Historical gender roles in Canada Historical gender roles in Canada
Video: Double Stranded DNA Molecule Animation

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