Despite the push for clean energy to wean us from petroleum, the nation's carbon addiction is unlikely to end by the middle of this century. Natural gas is poised to become the standard bearer for fossil fuels in the near future.
Sunspots represent magnetic activity on the surface and interior of the sun and have a cycle that averages 11 years. The 2008 minimum was the lowest in a century. As a result, solar flares were almost nonexistent, and solar extreme ultraviolet radiation was at low ebb.
Throughout history things that people could not understand were attributed to God. One by one this "God of the Gaps" eroded as science explained phenomena in the context of natural laws. The laws of nature are, at the most fundamental level, subsets of the laws of physics.
Lithium ion batteries are the hottest thing in portable energy. Their high energy density, as well as their ability to hold a charge and withstand many recharge cycles, have led to their use in many applications where light weight and long life are important.
Americans spend nearly $15 billion yearly on herbal supplements despite clinical studies that show that many of the most popular ones such as ginkgo biloba, echinacea and St. John's wort do not live up to their claims.
Discovery of an asteroid only 150 feet across less than 4 million miles from Earth by a University of Hawaii telescope is a significant event, considering the violent origin and history of the solar system when impacts and collisions formed and cratered the planets.
The sun is the source of all life and almost all energy on Earth, and we live within its extended atmosphere, protected only somewhat against its variable and harmful output of streams of high-energy particles and radiation by a weak magnetic field and our own thin atmosphere.
We believe that the Earth revolves around the sun, though few of us could prove it. It is impossible to prove to someone who does not understand Kepler's laws or who does not have the background to work with Newton's law of gravitation, yet we "believe" it.
Since April 172 million gallons, or 4 million barrels, of crude petroleum has discharged into the Gulf of Mexico, causing unheard-of damage to the gulf and coastal environments in the largest oil spill ever recorded.