Science & Evolution
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Sex with Neanderthals Made Us Stronger : Discovery News
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.
Life restoration of the nocturnal mammal Juramaia, hunting insects on a tree fern. Credit: Mark A. Klinger, Carnegie Museum of Natural History (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.
Discovery of a 160-million-year-old fossil represents a new milestone in early mammal evolution
Calculating your genealogy with other life forms To make a rough estimate of the cousin and removal relationship between you and any other living thing, all one needs to do is count up the generations back to the common ancestor. This sounds easy in theory but is complicated in practice. First, make an estimate of the number of generations along the human line back to the common ancestor .
Evolution
Staværinger Home Page
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. If you are mathematically inclined, the formula is x = 2 n , where x is the number of grandparents and n is the number of generations from yourself.
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.
Common ancestors of all humans
Psychology Today: Health, Help, Happiness + Find a Therapist
I've never been great with money, and up until recently, my wife and I had no clue about how much money we had, how much we spent, or how much we owed.
Einstein for Everyone
This book is a continuing work in progress. When I have time, I edit, expand and add to the chapters.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.
12.08.2009 - Social scientists build case for 'survival of the kindest'
Biology That Makes Us Tick: Free Stanford Course by Robert Sapolsky | Open Culture
First thing you need to know: Before doing anything else, you should simply click “play” and start watching the video above. It doesn’t take long for Robert Sapolsky , one of Stanford’s finest teachers, to pull you right into his course. Better to watch him than listen to me. Second thing to know: Sapolsky is a MacArthur Fellow, a world renowned neurobiologist, and an adept science writer best known for his book, Why Zebras Don’t Get Ulcers . Much of his research focuses on the interplay between the mind and body (how biology affects the mind, and the mind, the body), and that relationship lies at the heart of this course called “Human Behavioral Biology.” Now the third: Human Behavioral Biology is available on YouTube and iTunes for free.
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. .
Ensign Software - ESPL: Dances of the Planets
Today we’re bringing you a roundup of some of the great Science Fiction, Fantasy and Dystopian classics available on the web.
Open Culture
Human Behavioral Biology
Located between San Francisco and San Jose in the heart of Silicon Valley, Stanford University is recognized as one of the world's leading research and teaching institutions. The University was founded in 1891 by Leland and Jane Stanford to "promote the public welfare by exercising an influence on behalf of humanity and civilization." More than a century later, Stanford remains dedicated to finding solutions to the great challenges of the day and to preparing our students for leadership in today's complex world. The Stanford Channel on YouTube is an archive of videos from schools, departments, and programs across the university highlighting faculty lectures, events, news, and more.Genetics