All the different animals, different branching points, different transitional nodes in the tree of life. And so i argue that if this method of investigation is giving us a true historical signal, we should get an unambiguous signal, one that is giving us a single tree that is telling us the story of one historical unfolding of life. After all, history only happened once. That we get so many conflicting trees, i think, raises question about whether the method is sending a historical signal at all. The other problem with this method of investigation is that it begs the question, it says that the degree of difference between two proteins or genes in different animals is an indication of how long ago theydiverged from a common ancestor. But that they diverged from a common ancestor is presupposed from the outset of the investigation. And its presupposed in all the algorithms that analyze and compare the gene sequences. So you cant use a method of investigation that presupposes a common anc
This upcoming 250th anniversary. Examining our american experiment as key. This revolution of ours created waves across the world. With its lasting impacts, felt even today. This symposium the world turned upside down the American Revolution. Its impact on a global scale. Well study the effects of this revolution that trans formed governments and the governed across the globe. Appropriate as we consider the birth of our nation, is to acknowledge the Ancestral Lands of our Indigenous Peoples on which we gather. We recognize the many tribes who moved through this region trading and drawing resources from the land and waterways. We honor their descendants today. Our community is shaped by the diversity of its people. Past, present and future. And we affirm that this is central to the values of the place we now call alexandria. I have a few important housekeeping notes before we begin. We will have 15 minutes of question and answer after each presentation. So please line up behind the micr
Howard its permanent. We will be the judge of that. A big day indeed, the inauguration happening tomorrow, the world awaits a historymaking moment in our Nations Capital, we are exactly 24 hours from now, president elect donald j. Trump will be taking the oath of office to become our nations 40 for president. Preparations are now underway on the National Mall for tomorrows inauguration. That is where chief National Correspondent ed henry joins us live. Ed, what does it look like there . Good to see you, we are hearing all kinds of wonderful music as they plot out what they are going to be playing tomorrow in the runup to noon eastern time, when donald j. Trump will actually be sworn in as the nations 45th president. The weather is holding up good, it was a little bit chilly this morning, it is getting a little bit warmer right now, it is supposed to be relatively mild. A sharp difference, of course, from the first obama inaugural when we all remember how bitter cold it was here. There
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