Why is life on Earth so incredibly diverse yet so strangely similar? Similarities among Diverse Forms. Diversity among Similar Forms

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1 Similarities among Diverse Forms Diversity among Similar Forms Biology s Greatest Puzzle: The Paradox and Diversity and Similarity Why is life on Earth so incredibly diverse yet so strangely similar? 1

2 The Answer from Science whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved. Charles Darwin, 189 Nothing in biology makes sense except in the light of evolution. T. Dobzhansky, 1973 [Source: American Biology Teacher 3: ] Comments from Previous Students...I didn t like the material cover. I wish we could have gotten more into bio instead of evolution. This is supposed to be Biology 101 not Evolution 101. This class had nothing to do with Biology. This was strictly Evolution, and NOT the Biology 101 course I paid for! This is Life Science not an evolution class. I paid for a biology class and I got an evolution class. 2

3 Competing World Views Naturalistic evolution Evolution occurred via purely natural processes without any divine guidance. Theistic evolution Evolution occurs but is guided by God. Creationism Species were created separately by God. Group of adults Everyone Scientists Gallop poll of US adults (1997) Creationism God created man pretty much in his present form at one time within the last 10,000 years. 44% % Theistic evolution Man has developed over millions of years from less advanced forms of life, but God guided this process, including man's creation. 39% 40% Naturalistic Evolution Man has developed over millions of years from less advanced forms of life. God had no part in this process. 10% % The five main reasons why people say they do not believe in "evolution : 1. belief Jesus Christ 2. belief in God 3. due to my religion or faith 4. not enough evidence. belief in the Bible. Source: Opinions have been remarkably stable Guided by God % God Had No Part % God Created in Present Form % Other/ No Opinion % Source: 3

Group of students Before After Poll of this Class (2007) Creationism God created life pretty much in his present form at one time within the last 10,000 years. 23%?

4 Group of students Before After Poll of this Class (2007) Creationism God created life pretty much in his present form at one time within the last 10,000 years. 23%? Theistic evolution Life has developed over millions of years from older forms of life, but God guided this process, including human development. 3%? Naturalistic Evolution Life developed over millions of years from older forms of life. God had no part in this process. 19%? Note: % of students did not respond to this question. Education and World Views More educated adults believe in some form of evolution (theistic or naturalistic): 74% of people with post-graduate degrees 48% of college graduates 0% of adults with some college 41% of adults with high school or less. Analyst: : 1/24/ :03 PM: The people surveyed were asked to respond "true" or "false" to the statement "Human beings, as we know them, developed from earlier species of animals." Sources: [1040] Belief in Evolution- Iceland - Jon D. Miller, Michigan State University, The New York Times (8/1/06) - [1041] Belief in Evolution- Denmark - Jon D. Miller, Michigan State University, The New York Time

. The Threat of Intelligent Design Michael Behe, Ph.D. Lehigh University...Intelligent Design is a religious and not a scientific proposition. John E. Jones, US District Judge.

140 years.while we respect Prof. Behe's right to express his views, they are his alone and are in no way endorsed by the department.

5 . The Threat of Intelligent Design Michael Behe, Ph.D. Lehigh University...Intelligent Design is a religious and not a scientific proposition. John E. Jones, US District Judge...The department faculty, then, are unequivocal in their support of evolutionary theory, which has its roots in the seminal work of Charles Darwin and has been supported by findings accumulated over 140 years.while we respect Prof. Behe's right to express his views, they are his alone and are in no way endorsed by the department. It is our collective position that intelligent design has no basis in science, has not been tested experimentally, and should not be regarded as scientific. The Biology Faculty of Lehigh University Both sides ought to be properly taught so people can understand what the debate is about. George W. Bush, President of the USA Politics and religion threaten education. "Regardless of what you may personally believe, which of these do you believe should be taught in public schools? Response Evolution only Creationism only Intelligent design only All three None of these Unsure % CNN/USA Today/Gallup Poll. Sept. 8-11, 200. N=1,00 adults nationwide

6 All physics textbooks should include this warning label: This textbook contains material on Gravity. Universal Gravity is a theory, not a fact, regarding the natural law of attraction. This material should be approached with an open mind, studied carefully, and critically considered. Is evolutionary theory harder to understand? It s about the implications! 6

7 International Comparison of Science Skills Among 1-Year-Olds Country Finland Japan Upper rank Lower rank Hong Kong (China) 2 4 South Korea 2 4 Liechtenstein 11 Australia 10 Macao (China) 10 Netherlands 11 Czech Republic 11 New Zealand 6 11 Canada 8 12 Switzerland 10 1 France Because data are based on samples, it is not possible to report exact rank order positions for countries. However, it is possible to report the range of rank order positions within which the country mean lies with 9% likelihood. 2. Rank based on top two levels of proficiency (out of six) on mean scale of science performance. 3. Rank based on lowest two levels of proficiency (out of six) on mean scale of science performance. Source: Organization for Economic Cooperation and Development, OECD PISA (Program for Student Assessment) 2003 database. Belgium Sweden Ireland Hungary Germany Poland Slovak Republic Iceland United States Ways of Knowing Religion truth is received from a supernatural authority Philosophy truth is discovered by reasoning Science truth is discovered by reasoning and experimentation Passive Religion Philosophy Science Active Religion and Science: Why they can never get along While scientists seek to fill the gaps in our knowledge, religion has provided a God-of-the-gaps. New evidence that contradicts received truth threatens religion. Discoveries in all scientific disciplines have been opposed on religious grounds. 7

8 The difference between science and religion is the difference between a willingness to dispassionately consider new evidence and new arguments, and a passionate unwillingness to do so. Sam Harris, 2006 Letter to a Christian Nation Copernicus s Universe Aristotle s Universe Galileo Galilei ( ) 8

9 Theory of Evolution Simplifies our view of the world. Makes testable predictions. Provides real explanation based on detailed mechanisms. Evolutionary theory simplifies our world. Human Cat Whale Bat Turtle Chicken Mouse Pig Human Evolutionary theory makes testable predictions. The theory has been tested, refined, and re-tested for over 100 years; this rigorous scrutiny explains why biologists accept evolution as a fact. 9

real explanation with a detailed mechanism The idea is not subject to peer review.

10 Evolutionary theory involves detailed mechanisms. Natural selection Mutation Genetic drift Creationism Does not simplify our view of the world Is not a testable hypothesis Fails to provide a real explanation with a detailed mechanism The idea is not subject to peer review. I am no more fundamentalist when I say evolution is true than when I say it is true that New Zealand is in the southern hemisphere. We believe in evolution because the evidence supports it, and we would abandon it overnight if new evidence arose to disprove it. Richard Dawkins, 2006 The God Delusion 10

11 Controversy over Science Fetal Stem Cells As scientists fill in the gaps, the God-ofthe-gaps is being squeezed out! But will scientists ever be able to explain everything? Scientific Disciplines Biology Chemistry Physics Metaphysics 11

Metaphysics: The Boundary of Science Beyond a certain level, science

Humans can never know certain truths about their origins.

12 Metaphysics: The Boundary of Science Beyond a certain level, science cannot explain our universe. Humans can never know certain truths about their origins. Current knowledge of Physics contradicts most concepts of God, including the Judeo-Christian concept. Paul Davies University of Adelaide Course Policy I won t tell you what to believe about metaphysics as long as you don t let metaphysics guide your understanding of biology. 12

The Answer from Science

The Answer from Science Similarities among Diverse Forms Diversity among Similar Forms Biology s Greatest Puzzle: The Paradox and Diversity and Similarity Why is life on Earth so incredibly diverse yet so strangely similar? The