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Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Male coho salmon exhibit two alternative life history strategies. “Jack†Male coho salmon exhibit two alternative life history strategies. “Jackâ€ÂÂ
Oncosis Process Oncosis Process
The lost-wax casting process. The lost-wax casting process.
The process of urine formation. The process of urine formation.
Downstream Process - Inoculum Preparation & Expansion Downstream Process - Inoculum Preparation & Expansion
Non-Hormonal Forms of Birth Control Non-Hormonal Forms of Birth Control
Video: Gas exchange - partial pressure, locations, external and internal respiration

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