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There are 60,000 miles of blood vessels in every adult human.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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.