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Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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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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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Titan's dense atmosphere shrouds the moon beneath a tan haze in this image. Titan's dense atmosphere shrouds the moon beneath a tan haze in this image.
Which wavelengths of light are most effective at photosynthesis? Which wavelengths of light are most effective at photosynthesis?
Color-enhanced magnetic resonance image (MRI) showing a sagittal view of the head. Color-enhanced magnetic resonance image (MRI) showing a sagittal view of the head.
The formed elements: In this image, the red cells are red, the white cells are white, and the ... The formed elements: In this image, the red cells are red, the white cells are white, and the ...
Peptide Arrays - light-directed, spatially patterned oligopeptide synthesis Peptide Arrays - light-directed, spatially patterned oligopeptide synthesis
Chiropractor (stock image) Chiropractor (stock image)
Video: Interpreting a cladogram Animation

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