By 1973 Cohen and Boyer create first recombinant DNA organisms. 1978, the release of David Rorvik's book, In His Image: The Cloning of a man sparks a worldwide debate on cloning ethics. 1984 Steen Willadsen, a Danish scientist, reports he has made a genetic copy of a lamb from early sheep embryo cells, a process now called "twinning." ... In 1978 the release of David Rorvik's book, In His Image: The Cloning of a Man, sparks a worldwide debate on cloning ethics. (4) Many would argue that cloning has tremendous positive aspects and would only better our way of life. ... However, others...

• Word Count: 2146
• Approx Pages: 9
• Has Bibliography

Miller mixed "atmospheric" gases (hydrogen, methane, ammonia, and water vapor) in a sterile glass container and charged them with energy by adding electric sparks to them. The electric sparks resembled lightning at the time of the Earth's formation. ...

• Word Count: 2685
• Approx Pages: 11
• Grade Level: High School

According to many texts, before a scientist develops a hypothesis about anything, that individual notices something that sparks his or her imagination. 2. ... Experiment/Test. ... A well-designed experiment will test that prediction. ... Other experiments are simply quantitative observations and might be better described as tests. Astronomy is a science in which many experiments are essentially what I have just described as tests. 6. ...

• Word Count: 10700
• Approx Pages: 43
• Grade Level: High School