Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The Sun as it appears from the surface of Earth during the middle of the day
(A) The levels of the spinal cord and spinal nerves. (B) Photograph of the spinal cord as it descend
The Interiors of Earth and Mercury
Earth Atmosphere
Earth’s Spheres
Gravitational Potential Energy for the Earth problem