Solar power is energy from the sun that is converted into thermal or electrical energy. Solar energy is the cleanest and most abundant renewable energy source available, and the U.S. has some of the richest solar resources in the world.olar power is energy from the sun that is converted into thermal or electrical energy. Solar energy is the cleanest and most abundant renewable energy source available, and the U.S. has some of the richest solar resources in the world.
Hepatitis B can be prevented with a safe and effective vaccine that has been available since 1982. In Australia, the hepatitis B vaccination program commenced in 1988, targeting groups at particularly high risk of infection.
At age 6--8 months, 71% of these infants had completed the 3-dose hepatitis B vaccine series. On the basis of these coverage rates, CDC estimates that perinatal HBV infection in the United States declined 75% during 1987--2000 (CDC, unpublished data, 2000).