« previous next »
« previous next »
 

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it. In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
J. P. Morgan, the financial genius, staved off ruinous competition among steel firms by combining mo J. P. Morgan, the financial genius, staved off ruinous competition among steel firms by combining mo
Three days after the Boston Marathon explosion, the FBI released this photograph that had been taken Three days after the Boston Marathon explosion, the FBI released this photograph that had been taken
Neck stretch. Rest the receiver’s head on the palm of your right hand, taking a firm hold on the ... Neck stretch. Rest the receiver’s head on the palm of your right hand, taking a firm hold on the ...
How to classify whether an equation is linear, quadratic, or cubic How to classify whether an equation is linear, quadratic, or cubic
Firm handshake Firm handshake
Video: Muscle cell structures - actin, myosin and titin filaments

For a complete list of videos, visit our video library