Since the genetic engineering of plants began in the 1980s, the common form of modifying an organism has been to introduce new genes. However, during the early part of the 21st century, a number of scientists found ways to modify existing genes to create new effects.

Dr. Jill Tarter is the Director of the Center for SETI Research, the program that searches the sky for alien life using radio frequencies. Tarter is one of the most awarded scientists working in the field of astronomy today and notable for her alleged influence in Carl Sagan’s “Contact” novel.

Dr. Carolyn Porco is an imaging scientist famous for working on the Voyager and Cassini missions to Uranus, Neptune and Saturn. She is also in charge of the upcoming New Horizons imaging mission to Pluto and Kuiper Belt.

Lung cancer is a disease caused by smoke, radiation, asbestos, and viruses. This guide will give you the necessary information to understand the basic facts about lung cancer so you avoid the risk factors and understand the impact this major disease has on the population.

Galileo is one of the most famous astronomers and scientists in history. His work developed much of the modern concepts by which research is conducted today. Of all his achievements, his conflict with the Catholic Church over the nature of the solar system is one of the major events of his life.

There are numerous U.S. hypersonic aircraft designs utilized to various degrees over the years. The only vehicle successfully used is the Space Shuttle, although this ceases to be an aircraft while in orbit. The newest major design for a hypersonic aircraft comes in the form of the Boeing X-51.

Implemented over a number of years since the creation of the airplane, airport runway safety programs are designed to maintain a secure way for aircraft to takeoff and land. Many dangers exist which can impact the safety of airplanes, prompting the establishment of standard operating procedures.

The Concorde airplane was an aviation marvel that provided supersonic speeds aboard a passenger airliner. Although controversial, the aircraft was synonymous with speed and became one of the legends of flight from its debut in 1969 until its retirement in 2003.