Monday, June 7, 2010

Human Evolution

No other area of evolution has more denial than that of human beings. Most people don't like the idea that we came from 'monkeys' which happens to be a very large misconception. We did not evolve from monkeys, we merely had a common ancestor when our species diverged millions of years ago. No longer is the notion of ape-man. The evidence being brought these days is stagering that indeed we did come out of central Africa.

Lucy just isn't the lone fossil anymore. There are now over 4,000 hominid fossils that have been found (Lubenow 1992). Of those, about 150 are Homo Erectus, 90 Australopithecus robustus, 150 Australopithecus afarensis, and 500 Neanderthals. That is as of 1999, if anyone has a more updated count please let me know. Then, just recently in 2009, Ardi Ardipithecus ramidus was found, a hominid species from 4.4 milllion years ago.

I was originally going to lay out all the evidence in this post but I figured people like visual evidence, not something that's explained out to them. It needs to be real in their eyes. Also, the videos at the bottom in my opinion did such a wonderful job at showing the transitions of hominid species. Make no mistake about it. Human evolution is alive.


Here is a figure showing many of the hominid skull fossils that have been found. There has been many many more fossils found recently along with complete skeletons that are not shown in the diagram. The first skull is that of a chimpanzee (A), our closest living relative, for comparison. Notice how as time goes on, the frontal lobe starts to increase in size, giving rise to a larger pre-frontal cortex which is responsible for planning, decision making, and higher order thoughts.


(A) Pan troglodytes, chimpanzee, modern
(B) Australopithecus africanus, 2.6 Million Years
(C) Australopithecus africanus, 2.5 Million Years
(D) Homo habilis, 1.9 Million Years
(E) Homo habilis, 1.8 Million Years
(F) Homo rudolfensis, 1.8 Million Years
(G) Homo erectus, 1.75 Million Years
(H) Homo ergaster, 1.75 Million Years
(I) Homo heidelbergensis, 300,000 - 125,000 Years
(J) Homo neanderthalensis, 70,000 Years
(K) Homo neanderthalensis, 60,000 Years
(L) Homo neanderthalensis, 45,000 Years
(M) Homo sapiens, Cro-Magnon I, 30,000 Years
(N) Homo sapiens, modern

This diagram illustrates which species lived during the same. Whether or not any of these species ever came into contact with each other is still highly debatable and unknown. However there is some minor evidence suggesting that homo sapiens may have made contact with neanderthals. The neanderthals died out about 30,000 years ago from unknown causes.


Here are two very good videos (with lousy music) walking you through each of the many known hominid fossils and showing the transitions. Please watch and enjoy your family history:









Wednesday, June 2, 2010

Worries Confirmed Again :(

Last week during one of the most exciting accomplishments in science, the creation of synthetic life, the new Texas curriculum stole the headlines. The new curriculum is an effort to bring the United States back to a conservative majority by taking out major historical events that indicate liberal thinking. There is also an effort to implement more emphasis that the United States was found on Judeo-Christian influences. I can hear Thomas Jefefrson rolling over in his grave right now.

The new curriculum will be in effect for ten years until it is up for amendment again. Texas is one of the largest textbook consuming states and has a major effect on what children throughout the nation learn. This should strike fear in many americans teachers and parents alike. The Texas schoolboard is essentially re-writting history and children will lied to for the next decade.

Greenberg Research ran a poll who people think should have control of curriculum content:



"The curriculum plays down the role of Thomas Jefferson among the founding fathers, questions the separation of church and state, and claims that the U.S. government was infiltrated by Communists during the Cold War." - The Washington Post