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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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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.

Vaccine Types Vaccine Types
Various types of cells within the human body. Various types of cells within the human body.
Canada's energy stream Canada's energy stream
Global energy imbalance ~0.75 Wm-2 Global energy imbalance ~0.75 Wm-2
France has produced most of its energy from nuclear power since the oil crisis of the 1970s France has produced most of its energy from nuclear power since the oil crisis of the 1970s
Humans take in energy by eating food Humans take in energy by eating food
Video: ETC Protein Complexes & Chemiosmosis (Total ATP Production and ATP Synthase)

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