The Complete Work of Charles Darwin Online. Sex with Neanderthals Made Us Stronger. - The immune systems of modern humans got a boost when our early ancestors interbred with archaic species. - Genetic analysis shows that two now-extinct species contributed to the DNA of all living people. - In Europe and Asia, Neanderthals and Denisovans interbred with modern humans, some of whom brought the newly acquired genetic changes back to Africa. Mating with Neanderthals and another group of extinct hominids, Denisovans, strengthened the human immune system and left behind evidence in the DNA of people today, according to new research. The findings add to the growing body of evidence that modern humans who left Africa around 65,000 years ago mated with Neanderthals and Denisovans -- two archaic species that lived in Europe and Asia. The study, which appears in this week's Science, is among the first to show how the interbreeding shaped modern human genes and the attributes they pass to us.
PHOTOS: Faces of Our Ancestors. Discovery of a 160-million-year-old fossil represents a new milestone in early mammal evolution. (PhysOrg.com) -- A remarkably well-preserved fossil discovered in northeast China provides new information about the earliest ancestors of most of today's mammal species—the placental mammals. According to a paper published August 25 in the prestigious journal Nature, this fossil represents a new milestone in mammal evolution that was reached 35 million years earlier than previously thought, filling an important gap in the fossil record and helping to calibrate modern, DNA-based methods of dating the evolution.
A well-preserved fossil discovered in northeast China provides new information about the earliest ancestors of most of today's mammal species--the placental mammals. According to a paper published today in the journal Nature, the fossil represents a new milestone in mammal evolution that was reached 35 million years earlier than previously thought. It fills an important gap in the fossil record and helps to calibrate modern, DNA-based methods of dating evolution. Evolution. Staværinger Home Page. Kinship: Grandparents, Cousins and Other Relatives Slekskap: Besteforeldre, søskenbarn og annen slektninger Staværinger Home Page This page is intended as a guide to the various family relationships. Everyone has two parents, four grandparents, eight great grandparents, sixteen great-great grandparents (also known as 2nd great grandparents), 32 3rd great-grandparents, etc. The number doubles with each generation and quickly gets very large as one goes back in time.
The numbers quickly become staggering. Not only that, mathematical modeling of common ancestry shows that this extends to all Europeans and to a large number of non-Europeans as well. You share 50% of your genetic kinships with either of your parents, 25% with any of your grandparents, 12.5% with any of your great-grandparents, and 6.25% with any of your 2nd great-grandparents. Your first cousins are the children of your parents' siblings, sharing two of your four grandparents with you. Revised. Common ancestors of all humans. Royal Descents of famous people - Common ancestors of all humans by Mark Humphrys It has been known since Darwin's work in the 19th century that all of humanity (indeed all of life) is on one family tree. In other words, there existed in the past animals who are common ancestors of all humans now living.
What this page is about is when was the most recent common ancestor of all living humans. A number of new strands of evidence indicate it was surprisingly recent, even within recorded history. The Ancient Egyptian Pharaoh Khufu (or Kheops or Cheops) reigned 2589 to 2566 BC, built the Great Pyramid, and left a line that almost certainly did not die out. Definitions Let us define the terms: CA Common Ancestor of all living humans - There are trillions of these, stretching from the origin of DNA-based life 4 to 3.5 billion years ago to a lot more recently - perhaps even within historical times, as we shall see.
Background reading The MRCA is human The world The interbreeding world The West. Psychology Today: Health, Help, Happiness + Find a Therapist. Einstein for Everyone. Einstein for Everyone Nullarbor Press 2007revisions 2008, 2010, 2011, 2012, 2013 Copyright 2007, 2008, 2010, 2011, 2012, 2013 John D. Norton Published by Nullarbor Press, 500 Fifth Avenue, Pittsburgh, Pennsylvania 15260 with offices in Liberty Ave., Pittsburgh, Pennsylvania, 15222 All Rights Reserved John D. Norton Center for Philosophy of Science Department of History and Philosophy of Science University of Pittsburgh Pittsburgh PA USA 15260 An advanced sequel is planned in this series:Einstein for Almost Everyone 2 4 6 8 9 7 5 3 1 ePrinted in the United States of America no trees were harmed web*bookTM This book is a continuing work in progress.
January 1, 2015. Preface For over a decade I have taught an introductory, undergraduate class, "Einstein for Everyone," at the University of Pittsburgh to anyone interested enough to walk through door. At the same time, my lecture notes have evolved. This text owes a lot to many. I i i. 12.08.2009 - Social scientists build case for 'survival of the kindest' By Yasmin Anwar, Media Relations | 08 December 2009 BERKELEY — Researchers at the University of California, Berkeley, are challenging long-held beliefs that human beings are wired to be selfish. In a wide range of studies, social scientists are amassing a growing body of evidence to show we are evolving to become more compassionate and collaborative in our quest to survive and thrive. (Photo illustration by Jonathan Payne) In contrast to "every man for himself" interpretations of Charles Darwin's theory of evolution by natural selection, Dacher Keltner, a UC Berkeley psychologist and author of "Born to be Good: The Science of a Meaningful Life," and his fellow social scientists are building the case that humans are successful as a species precisely because of our nurturing, altruistic and compassionate traits.
They call it "survival of the kindest. " Empathy in our genes "The tendency to be more empathetic may be influenced by a single gene,” Rodrigues said. Cultivating the greater good. Biology That Makes Us Tick: Free Stanford Course by Robert Sapolsky. Ensign Software - ESPL: Dances of the Planets. The planets in the heavens move in exquisite orbital patterns, dancing to the Music of the Cosmos. There is more mathematical and geometric harmony than we realize.
The idea for this article is from a book Larry Pesavento shared with me. The book, 'A Little Book of Coincidence' by John Martineau, illustrates the orbital patterns and several of their geometrical relationships. . Take the orbits of any two planets and draw a line between the two planet positions every few days. Because the inner planet orbits faster than the outer planet, interesting patterns evolve. Earth: 8 years * 365.256 days/year = 2,922.05 days Venus: 13 years * 224.701 days/year = 2,921.11 days (ie. 99.9%) Watching the Earth-Venus dance for eight years creates this beautiful five-petal flower with the Sun at the center. (5 is another Fibonacci number.)
Another intriguing fact is the ratio between the Earth's outer orbit and Venus's inner orbit is given by a square. Article by Howard Arrington. Human Behavioral Biology.
Large Hadron Collider - How does it work? What Mimicking One's Language Style May Mean About the Relationship. Oct. 4, 2010 AUSTIN, Texas — People match each other's language styles more during happier periods of their relationship than at other times, according to new research from psychologists at The University of Texas at Austin. "When two people start a conversation, they usually begin talking alike within a matter of seconds," says James Pennebaker, psychology professor and co-author of the study.
"This also happens when people read a book or watch a movie. As soon as the credits roll, they find themselves talking like the author or the central characters. " This tendency is called language style matching or LSM. It is the focus of Pennebaker's and co-author Molly E. Ireland's study published in the September issue of Journal of Personality and Social Psychology. "Because style matching is automatic," says Ireland, a psychology graduate student, "it serves as an unobtrusive window into people's close relationships with others. " Chomsky.info : The Noam Chomsky Website. Science News, Research And Discussion.
TED: Ideas worth spreading. Encyclopedia of Life. Understanding Evolution. Natural History Museum. Natural History Magazine. Revealing the Link - Welcome. Introduction to Bird Song : Home page. Your online guide to birds and bird watching, All About Birds, Cornell Lab of Ornithology. Study Catches Two Bird Populations As They Split Into Separate Species. A new study finds that a change in a single gene has sent two closely related bird populations on their way to becoming two distinct species. The study, published in the August issue of the American Naturalist, is one of only a few to investigate the specific genetic changes that drive two populations toward speciation. Speciation, the process by which different populations of the same species split into separate species, is central to evolution.
But it's notoriously hard to observe in action. This study, led by biologist J. Albert Uy of Syracuse University, captures two populations of monarch flycatcher birds just as they arrive at that evolutionary crossroads. Monarch flycatchers are small, insect-eating birds common in the Solomon Islands, east of Papua New Guinea. The question of whether these two populations are on the road to speciation comes down to sex. It would be all but impossible to try to catalog every occasion on which an all-black flycatcher mated with a chestnut-bellied. Introduction to Bird Song : Home page. :: Darwin Correspondence Project. The Alfred Russel Wallace Page. The Carl Sagan Portal. Home. How to Detect Lies - body language, reactions, speech patterns.
Interesting Info -> Lying Index -> How to Detect Lies Become a Human Lie Detector (Part 1) Warning: sometimes ignorance is bliss. After gaining this knowledge, you may be hurt when it is obvious that someone is lying to you. The following deception detection techniques are used by police, forensic psychologists, security experts and other investigators. Introduction to Detecting Lies: This knowledge is also useful for managers, employers, and for anyone to use in everyday situations where telling the truth from a lie can help prevent you from being a victim of fraud/scams and other deceptions. This is just a basic run down of physical (body language) gestures and verbal cues that may indicate someone is being untruthful. If you got here from somewhere else, be sure to check out our Lie Detection index page for more info including new research in the field of forensic psychology. Signs of Deception: Body Language of Lies: • A person who is lying to you will avoid making eye contact.
Bored? | from Psychology: An Introduction | in Chapter 15: Social Psychology | Table of Contents | in Chapter 15: Social | from Psychology: An Introduction by Russ Dewey. Psychology: An Introduction Table of Contents Next page Copyright© 2007-2011Russ Dewey Part One: Group Influences Part Two: Organizations and Movements Part Three: Social Cognition Part Four: Hostile and Helping Behavior Overview of Chapter 15: Social Psychology The 20th Century was a time of unusually severe social problems, marked by world wars, social upheaval, violence, religious and political conflict.
Psychologists also studied more benign, pleasant, and productive social activities of humans, after the post-war decades. The rise of cognitive psychology in the 1970s and beyond ushered in a new era of social cognitive psychology, focusing on the informationg processing carried out by people to evaluate each other and group situations. How this chapter is organized More than most disciplines, social psychology is marked by classic experiments. The opening portion of the chapter highlights research on group influences upon the individual. Related topics in other chapters Write to Dr.