Posts tagged ‘Evolution’

Meet future woman

The future evolution of women (10 generations): Women will be shorter, plumper, and more fertile.

The team studied 2238 women who had passed menopause and so completed their reproductive lives. For this group, Stearns’s team tested whether a woman’s height, weight, blood pressure, cholesterol or other traits correlated with the number of children she had borne. They controlled for changes due to social and cultural factors to calculate how strongly natural selection is shaping these traits.

Quite a lot, it turns out. Shorter, heavier women tended to have more children, on average, than taller, lighter ones. Women with lower blood pressure and lower cholesterol levels likewise reared more children, and – not surprisingly – so did women who had their first child at a younger age or who entered menopause later. Strikingly, these traits were passed on to their daughters, who in turn also had more children.

If these trends continue for 10 generations, Stearns calculates, the average woman in 2409 will be 2 centimetres shorter and 1 kilogram heavier than she is today. She will bear her first child about 5 months earlier and enter menopause 10 months later (Proceedings of the National Academy of Sciences, DOI: 10.1073/pnas.0906199106).

via Meet future woman: shorter, plumper, more fertile – health – 19 October 2009 – New Scientist.

Advertisements

October 21, 2009 at 11:45 am Leave a comment

Right to bear arms… but why do they swing?

Biomedical researchers on Wednesday said they could explain why we swing our arms when we walk, a practice that has long piqued scientific curiosity.

Continue Reading July 29, 2009 at 10:44 am Leave a comment

New branch on the human evolution tree

Anthropologists who believed the fossils represented a new species named it after its home island of Flores, where local folk tales described a race of diminutive jungle dwellers. They hypothesized a direct-line descent from H. erectus, the last common ancestor of all human species, who left Africa 2.5 million years ago.

But other researchers were unconvinced…

…This suggests that H. floresiensis may belong to an as-yet-unknown branch of the human family tree, possibly even an evolutionary brother of Homo erectus. “These new findings raise the possiblity that the ancestor of H. floresiensis was not Homo erectus but instead some other, more primitive hominin whose dispersal into southeast Asia is still undocumented,” wrote Jungers’ team.

via Hobbits May Belong on New Branch of Our Family Tree

May 11, 2009 at 5:41 pm Leave a comment

Science teachers violate the constitution by not respecting Creationism

It’s the last line that gets me… if talking about creationism means that you are crossing the line into religion, then doesn’t this prove that creationism is not science but hocus-pocus?

Continue Reading May 11, 2009 at 5:31 pm Leave a comment

What evolution is not

This is a nice list of what Evolution is NOT

Continue Reading March 25, 2009 at 12:49 pm Leave a comment

Evolution of video games and violence… but not what you are thinking!

And there you have it. Because of human evolution, you start out with a video game and end up with violence by use of a simple syllogism…

Continue Reading March 10, 2009 at 10:42 am Leave a comment


Pages

Twitter Updates

Error: Twitter did not respond. Please wait a few minutes and refresh this page.

RSS Democracy Now!

  • Major Victories for Climate Movement, But Global Chaos Grows: Roundtable with Leaders on What's Next
    After a summer of extreme weather around the world, we host a roundtable discussion with environmental leaders on next steps: Lindsey Allen, executive director of the Rainforest Action Network; Dallas Goldtooth, an organizer with the Indigenous Environmental Network; and May Boeve, executive director of 350 Action, the political arm of the climate organizati […]
    mail@democracynow.org (Democracy Now!)
  • Urban Conflagration: Fire Scientist on Climate Change & What Makes California's Wildfires Different
    California wildfires have killed at least 42 people and destroyed thousands of homes and businesses, scorching more than 200,000 acres—roughly the size of New York City. The blazes are the deadliest since record keeping began. As global temperatures continue to rise, we'll look at the link between fires and climate change with Max Moritz, fire research […]
    mail@democracynow.org (Democracy Now!)
  • Fearing Deportation, Immigrants Fleeing California Wildfires Avoid Shelters & Face Homelessness
    As catastrophic wildfires in California kill at least 42 people and leave thousands of homes and businesses in ruins, many of the area's 20,000 undocumented immigrants have had no sanctuary from the flames, with some sleeping on beaches in order to avoid federal agents at shelters. This comes as far-right media outlets like Breitbart are falsely reporti […]
    mail@democracynow.org (Democracy Now!)
  • Headlines for October 20, 2017
    Without Uttering "Trump," Obama & George W. Bush Denounce President, Trump to Visit China, Vietnam, Japan, the Philippines & South Korea, California: Deadly Wildfires Cause $1 Billion in Insured Losses, One Month After Maria, Millions in Puerto Rico Still Without Power, Quentin Tarantino on Harvey Weinstein: "I Knew", Army Soldier […]
    mail@democracynow.org (Democracy Now!)
  • Guantánamo Prisoners on Hunger Strike Say Guards Threatened to Kill Them by Stopping Force-Feeding
    Guantánamo Bay detainees who are on hunger strike have accused officials of a sudden change in practice that could result in them starving to death, as doctors threaten to stop force-feeding them and are no longer monitoring their medical condition. We speak with Clive Stafford Smith of Reprieve, which represents eight of the 41 Guantánamo detainees. Repriev […]
    mail@democracynow.org (Democracy Now!)
  • Who Profits from the Opioid Crisis? Meet the Secretive Sackler Family Making Billions from OxyContin
    This week, President Donald Trump's nominee for drug czar, Republican Congressmember Tom Marino, had to withdraw from consideration after a Washington Post/"60 Minutes" investigation found he led a drug industry-backed effort to pass a law that weakened the U.S. Drug Enforcement Administration's ability to crack down on addictive opioids. […]
    mail@democracynow.org (Democracy Now!)
  • Trump's Travel Ban Suffers Another Defeat as Judges Say Threat of Discrimination "Still Intact"
    President Trump's latest attempt to bar some citizens of eight Muslim majority countries from entering the U.S. suffers a second defeat, as another federal judge rules that the latest policy is unconstitutional. We speak with Baher Azmy, legal director of the Center for Constitutional Rights.
    mail@democracynow.org (Democracy Now!)
  • Headlines for October 19, 2017
    Federal Judge in Maryland Deals Second Blow to Trump's Latest Travel Ban, Somalia: Thousands Protest Saturday's Massive Bombing in Mogadishu, Afghanistan: Taliban Attack Kills 43 Afghan Soldiers, Tillerson: Burmese Military Responsible for Rohingya Ethnic Cleansing, WaPo: Trump Promised Father of Slain Soldier $25,000—But Money Never Arrived, Sessi […]
    mail@democracynow.org (Democracy Now!)
  • Why Are Women Prisoners Battling California Wildfires for as Little as $1 a Day?
    As raging wildfires in California scorch more than 200,000 acres—roughly the size of New York City—more than 11,000 firefighters are battling the blazes, and a number of them are prisoners, including many women inmates. We speak to Romarilyn Ralston with the California Coalition for Women Prisoners, Los Angeles chapter, who is the program coordinator for Pro […]
    mail@democracynow.org (Democracy Now!)
  • Rosa Clemente on Puerto Ricans Drinking Toxic Water & San Juan Mayor's Message to the Diaspora
    In Puerto Rico, residents desperate for drinking water have begun pumping water from the Dorado Groundwater Contamination Site—a hazardous waste Superfund site. The EPA warns the water contains chemicals that cause liver damage and an increased risk of cancer. We speak with Rosa Clemente, just back from Puerto Rico, where she joined other independent journal […]
    mail@democracynow.org (Democracy Now!)

RSS Science Blogs

  • Comments of the Week #164: From black holes to moons with moons of their own [Starts With A Bang]
    “There are two types of people who will tell you that you cannot make a difference in this world: those who are afraid to try and those who are afraid you will succeed.” -Ray Goforth We’ve really investigated some amazing scientific stories this week here at Starts With A Bang! There’s always so much to consider, think…
    Ethan
  • The Oldest Human Bones, Jebel Irhoud, Morocco [Greg Laden's Blog]
    You’ve heard to story. I’m here to give you a little context. But in case you haven’t heard the story, this is from the press release which is, so far, the only information generally available: New finds of fossils and stone tools from the archaeological site of Jebel Irhoud, Morocco, push back the origins of…
    Greg Laden
  • Comments of the Week #163: from the edge of the Universe to the Milky Way’s demise [Starts With A Bang]
    “Humanity has won its battle. Liberty now has a country.” -Marquis de Lafayette There’s so much science to talk about in any given week here at Starts With A Bang! It’s sometimes hard to choose, but one particular topic stole the show this past week: black holes. Sure, we took on other things, too, but we didn’t even…
    Ethan
  • Various comments and current news [Greg Laden's Blog]
    For some reason, Facebook is not posting reliably and I will not abide writing paragraphs that the Internet sucks into oblivion! So, I have a few thoughts I’ll put here and try to link to. Rebecca Otto for Governor Let’s start with Rebecca Otto, who just gave a great talk at the DFL (that’s what…
    Greg Laden
  • Swedish Academia Is No Meritocracy [Aardvarchaeology]
    After almost 14 mostly dismal years on the academic job market, I find it a consolation to read an opinion piece in Times Higher Education under the headline “Swedish Academia Is No Meritocracy“. In my experience this is also true for Denmark, Norway and Finland. In Norway, for instance, the referee board that evaluates job…
    Martin R
  • We’ll always have Paris [Greg Laden's Blog]
    If you are upset about Trump and upset about Trump pulling the US out of the Paris agreement, please let me help you get through the day. Trump announcing that the US is pulling out of Paris does not mean the end of Paris, the end of action on climate change, or much else about…
    Greg Laden
  • Improving endurance exercise [Life Lines]
    We all know that aerobic exercise is good for us because it helps improve muscle function and our ability to move well. For fish, aerobic exercise helps animals escape predators, catch prey as well as improve reproduction success. When we exercise, our muscles adapt by altering the metabolism of energy, the way calcium is handled as…
    Dr. Dolittle
  • Comments of the Week #162: from singularity evaporation to the loss of Earth’s helium [Starts With A Bang]
    “The ability to listen and learn is key to mastering the art of communication. If you don’t use your verbal skills and networking, it will disappear rapidly.” -Rick Pitino It’s been a week full of amazing and controversial stories about the Universe here at Starts With A Bang! Did you catch the fantastic live event on Wednesday at…
    Ethan
  • Using fish skin to treat burn victims [Life Lines]
    Researchers in Brazil are testing a new way to treat burn victims. They have found that tilapia skin is rich in collagen which helps the damaged skin heal better than standard wound dressings and eliminates the need to wait for donor tissue. Check out these videos from YouTube describing this radical new idea in burn…
    Dr. Dolittle
  • Seven Stories Of Science Gone Wrong [Greg Laden's Blog]
    What, with all the attacks on science and scientist these days, we may not want to be focusing on those times when science goes off the rails and makes a huge mess of things. But, science at its best and scientists at their best, will never shy away from such things. Dr. Paul Offit just…
    Greg Laden

RSS AZ Daily Star

  • An error has occurred; the feed is probably down. Try again later.