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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

Fast-flowing waters of the Humber River, Newfoundland, are a challenge to Atlantic salmon migrating Fast-flowing waters of the Humber River, Newfoundland, are a challenge to Atlantic salmon migrating
The meandering Okavango River, Botswana. The meandering Okavango River, Botswana.
Black flies are blood-sucking insects who vector disease, like River Blindness, while feeding on hum Black flies are blood-sucking insects who vector disease, like River Blindness, while feeding on hum
The Los Angeles River The Los Angeles River
In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many
The Columbia River Basalts The Columbia River Basalts
Video: Four Giant Convection Cells oF Earth

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