You Might Be a Neanderthal If...
New studies shed light on how Neanderthal DNA is affecting the appearance and behavior of modern humans.
Neanderthals, our ancient predecessors, who became extinct in Europe about 40,000 years ago, were found to interbreed with modern humans when both lived at the same time in Eurasia. As such, some Neanderthal genes found their way into our DNA, making up from 1 to 3 percent of the genetic code of humans who were not indigenous to Africa. As shows a new study from the Max Planck Institute for Evolutionary Anthropology in Germany, the Neanderthal code, while not large, may still be having a significant effect on how we look and feel.
The research team set out to figure out which specific elements of human appearance and behavior are linked to Neanderthal DNA. The scientists used information from the UK Biobank which made available genetic data on 112,338 individuals with white European ancestry (who have Neanderthal DNA), along with answers by the participants to questionnaires that included physical and behavioral descriptions. The researchers compared this to the genetic analysis of a Neanderthal specimen from the Altai mountains in Siberia.
The study's lead author computational biologist Michael Dannemann and co-author Janet Kelso discovered genetic links between Neanderthals and modern humans in traits like skin and hair color, sleeping patterns, mood and even tobacco use.
In particular, many of the connections were related to the adaptations to sunlight made by our genetic forefathers. They lived in Eurasia's sunlight conditions thousands of years before the arrival of modern humans and thus developed favorable genes to deal with the environment which they likely passed on to the humans through interbreeding.
Neanderthal cavemen hunting the cave bear. Circa 500000 BC. (Photo by Three Lions/Getty Images)
Being a night owl is one way you might get in touch with your Neanderthal roots, shows the research, as traits for staying up at night and napping during the day were found linked to Neanderthal DNA. So were moodiness and loneliness as well as propensity to smoke.
If you have red hair, you probably have little Neanderthal DNA in you as the data suggests red-headed Neanderthals were rare or maybe even non-existent.
How easily you get sunburned is another Neanderthal-linked characteristic, according to the scientists.
"Skin and hair color, circadian rhythms and mood are all influenced by light exposure," wrote the researchers. "We speculate that their identification in our analysis suggests that sun exposure may have shaped Neanderthal phenotypes and that gene flow into modern humans continues to contribute to variation in these traits today."
Read the new study here, in the American Journal of Human Genetics.
Another Neanderthal-related new study from researchers at the same Max Planck Institute, published in October in Science magazine, provides more evidence of how ancient DNA affects our health.
The team led by Svante Pääbo and Kay Prüfer made a detailed analysis of a Neanderthal woman who lived 52,000 years ago in Croatia. Through comparison, they found that the Neanderthal genome contributes to such health issues in modern people as blood cholesterol levels, schizophrenia, eating disorders as well as rheumatoid arthritis.
“These are just associations, so that doesn't mean if you have a particular variant of a gene, you either will or won't have a disease. It means sometimes you might," said Prüfer.
The studies contribute to the growing amount of knowledge about how Neanderthal genetics are affecting us. In further research, Danneman and Kelso, the scientists behind the study using Biobank data are looking to use the genome analyzed by their colleagues to repeat the research.
Dominique Crenn, the only female chef in America with three Michelin stars, joins Big Think Live this Thursday at 1pm ET.
Astronomers spot an object heading into Earth orbit.
Minimoons<p>Scientists have confirmed just two prior minimoons. One was <a href="https://en.wikipedia.org/wiki/2006_RH120" target="_blank">2006 RH120</a>, which orbited us from September 2006 to June 2007. The other was <a href="https://en.wikipedia.org/wiki/2020_CD3" target="_blank">2020 CD3</a>, which got stuck in the 2015–2016 timeframe, and is believed to gotten away in May 2020.</p><p>2020 SO, the new kid on the block, is expected to arrive in October 2020 and pop out of orbit in May 2021.</p><div id="37962" class="rm-shortcode" data-rm-shortcode-id="f4c0fc8a2cba6536ea4cd960ebed3e6e"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1307729521869611008" data-partner="rebelmouse"><div style="margin:1em 0">Asteroid 2020 SO may get captured by Earth from Oct 2020 - May 2021. Current nominal trajectory shows shows capture… https://t.co/F5utxRvN6Z</div> — Tony Dunn (@Tony Dunn)<a href="https://twitter.com/tony873004/statuses/1307729521869611008">1600621989.0</a></blockquote></div>
Identifying 2020 SO<p>The first clue 2020 SO isn't your ordinary asteroid is its exceptionally low velocity. It's traveling much more slowly that a typical asteroid — their <a href="https://www.lpi.usra.edu/exploration/training/illustrations/craterMechanics/" target="_blank">average rate of travel</a> <a href="https://www.lpi.usra.edu/exploration/training/illustrations/craterMechanics/" target="_blank" rel="noopener noreferrer"></a>is 18 kilometers (58,000 feet) per second. Even <a href="https://en.wikipedia.org/wiki/Moon_rock" target="_blank">moon rocks</a> sent careening into Earth orbit by impacts on the lunar surface outpace pokey 2020 SO.</p><p>For another thing, 2020 SO has an orbital path very similar to Earth's, lasting about one Earth year. It's also just slightly less circular than our own orbit, from which it's barely tilted off-axis.</p><p>So, what is it? <a href="https://cneos.jpl.nasa.gov/ca/" target="_blank">NASA estimates</a> that the object has dimensions very reminiscent of a discarded Centaur rocket stage from the <a href="https://en.wikipedia.org/wiki/Surveyor_2" target="_blank" rel="noopener noreferrer">Surveyor 2 mission</a> that landed an unmanned craft on the moon. Back in the day, rocket stages were jettisoned as craft were aimed toward their desired position. This stuff, if released high enough, remains in space. It appears that this Centaur rocket, launched in September 1966, is now making its way back homeward, at least for a little bit.</p><p>When 2020 SO arrives at its closest point in December, the rocket is expected to be about 50,000 kilometers from Earth. Its next closest approach is much further: 220,000 kilometers, in February 2010.</p><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQzMDk3NC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYyODg1MTQ1MX0.HGknDwqp0GmeuczKY_AS7vrPG7KMFUc_XO95tNoI2xo/img.jpg?width=980" id="e5cda" class="rm-shortcode" data-rm-shortcode-id="85eb1f790d8c3ee5b261f7ba13eaa5e1" data-rm-shortcode-name="rebelmouse-image" alt="Centaur rocket stage" />
Centaur rocket stage
What we may be able to learn<p>Earthly space programs being as young as they are, scientists would love to know what's happened to our rocket during a half century in space.</p><p>While 2020 SO won't get close enough to drop into our atmosphere, its slow progress has scientists hopeful that they'll still get some kind of a decent look at it.</p><p>Spectroscopy may be able to reveal what the rocket's surface is like now — has any of its paint survived, for example? Of course, being out in space, it's likely to have been hit by lots of dust and micrometeorites, so the current state of its surfaces is also of interest. Experts are curious to know how reflective the rocket is at this point, valuable information that can help planners of future long-term missions anticipate how well a craft out in space for extended periods will remain able to reflect sunlight.</p>
The U.S., China, and Russia are in a "vaccine race" that treats a global challenge like a winner-take-all game.
All for one (vaccine)<p>Launched this April, <a href="https://www.who.int/initiatives/act-accelerator" target="_blank">the Access to COVID-19 Tools (ACT) Accelerator</a> brought together a panoply of governments, scientists, businesses, and global health organizations with the goal of accelerating the development, production, and distribution of an efficacious COVID-19 vaccine. The "vaccines pillar" of this initiative is <a href="https://www.gavi.org/vaccineswork/covax-explained" target="_blank">the COVAX Facility</a>.</p><p>COVAX is coordinated by the WHO, the Coalition for Epidemic Preparedness Innovations (CEPI), and Gavi, the Vaccine Alliance. The program maintains a diverse portfolio of COVID-10 vaccines, monitoring each to identify promising candidates. It has also partnered with manufacturers to ease investment risks and serves as a purchasing pool for self-financing countries, while offering fundraising efforts to poorer ones.</p><p>"[G]overnments from every continent have chosen to work together, not only to secure vaccines for their own populations, but also to help ensure that vaccines are available to the most vulnerable everywhere," Seth Berkley, CEO of Gavi, <a href="https://www.gavi.org/news/media-room/boost-global-response-covid-19-economies-worldwide-formally-sign-covax-facility" target="_blank">said in a release</a>. "With the commitments we're announcing today for the COVAX Facility, as well as the historic partnership we are forging with industry, we now stand a far better chance of ending the acute phase of this pandemic once safe, effective vaccines become available."</p><p><a href="https://www.vox.com/21448719/covid-19-vaccine-covax-who-gavi-cepi" target="_blank" rel="noopener noreferrer">In an interview with Vox</a>, Berkley noted that the ACT Accelerator is the largest global collaboration since the Paris Climate Agreement. He added, "This type of solidarity is critical because otherwise what you're going to end up with is just a constant reintroduction of infections and the inability to go back to normal."</p><p>As of Monday, 64 higher-income countries and 92 low- and middle-income countries—representing nearly two-thirds of the world's population—<a href="https://www.gavi.org/news/media-room/boost-global-response-covid-19-economies-worldwide-formally-sign-covax-facility" target="_blank" rel="noopener noreferrer">have signed commitments to COVAX</a>. Thirty-eight more are expected to sign soon.</p><p>COVAX's goal is to have 2 billion doses by the end of 2021. Experts estimate this amount will cover high-risk and vulnerable people, as well as healthcare workers, worldwide. Participating nations must cover those populations before administering vaccines according to national priorities. As part of the agreement, countries agree to support equal access to the vaccine once it becomes available, a move aimed at preventing hoarding and price gouging. </p><p>Currently, CEPI is supporting nine candidate vaccines, of which eight are in clinical trials.</p>
Why has the U.S. backed out?<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="7167e0bf1593a7cb29c1a116041116e3"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/LUAsKbH7yeY?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>The United States is gambling that its bilateral deals with various pharmaceutical companies will win the "<a href="https://www.washingtonpost.com/world/coronavirus-vaccine-trump/2020/09/01/b44b42be-e965-11ea-bf44-0d31c85838a5_story.html" target="_blank" rel="noopener noreferrer">vaccine race</a>." This U.S.-only initiative, named (sigh) <a href="https://www.hhs.gov/about/news/2020/06/16/fact-sheet-explaining-operation-warp-speed.html" target="_blank" rel="noopener noreferrer">Operation Warp Speed</a>, has already spent <a href="https://www.cnbc.com/2020/08/14/the-us-has-already-invested-billions-on-potential-coronavirus-vaccines-heres-where-the-deals-stand.html" target="_blank" rel="noopener noreferrer">approximately $10 billion</a> and is pushing to deliver 300 million doses by January 2021. Many experts worry this speedy push through the regulatory path could result in <a href="https://www.sciencemag.org/news/2020/08/here-s-how-us-could-release-covid-19-vaccine-election-and-why-scares-some" target="_blank" rel="noopener noreferrer">premature and dangerous approvals</a>.</p><p>China and Russia have likewise bet on their own high-priced ponies. Russia is touting <a href="https://arstechnica.com/science/2020/09/russia-offers-its-untested-covid-19-vaccine-for-free-to-un-officials/" target="_blank" rel="noopener noreferrer">an unvetted vaccine</a> nicknamed (double sigh) "Sputnik V." This vaccine has only concluded <a href="https://www.thelancet.com/journals/lanres/article/PIIS2213-2600(20)30402-1/fulltext" target="_blank" rel="noopener noreferrer">phase 1 and 2 trials</a> with a small number of participants, yet Russia claims to have already received international requests. Meanwhile, China has administered <a href="https://www.reuters.com/article/us-health-coronavirus-china-vaccines-foc/in-coronavirus-vaccine-race-china-inoculates-thousands-before-trials-are-completed-idUSKBN26705Q" target="_blank" rel="noopener noreferrer">tens of thousands of doses of a vaccine</a> before completing phase 3 clinical trials. </p><p>An additional barrier to the United States' participation: COVAX is a WHO-led initiative. Earlier this year, <a href="https://www.npr.org/2020/05/29/865685798/president-trump-announces-that-u-s-will-leave-who" target="_blank" rel="noopener noreferrer">President Donald Trump admonished the WHO as a corrupt organization</a> and claimed it assisted China in covering up the coronavirus outbreak and its severity. Though he presented no evidence for the accusation, Trump has used it as the basis for <a href="https://www.statnews.com/2020/09/21/64-high-income-nations-join-effort-to-expand-global-access-to-covid-19-vaccines-but-u-s-and-china-do-not/" target="_blank" rel="noopener noreferrer">his threat to cut ties with</a>, and funding for, the agency.</p><p>"The United States will continue to engage our international partners to ensure we defeat this virus, but we will not be constrained by multilateral organizations influenced by the corrupt World Health Organization and China," said Judd Deere, a spokesman for the White House, said <a href="https://www.reuters.com/article/us-health-coronavirus-usa-who/white-house-slams-who-over-criticism-of-push-for-covid-19-vaccine-idUSKBN25S62T" target="_blank" rel="noopener noreferrer">in a statement</a>.</p><p>He added, "This president will spare no expense to ensure that any new vaccine maintains our own FDA's gold standard for safety and efficacy, is thoroughly tested, and saves lives."</p><p>By shirking COVAX, these countries hope to gain peerless access to a vaccine. Each could secure large numbers of doses for its citizens while also reaping the political boons to follow. In the United States, President Trump has pinned his re-election bid on a timely vaccine, while Chinese officials seem posed to use a vaccine <a href="https://www.nytimes.com/2020/09/11/business/china-vaccine-diplomacy.html" target="_blank" rel="noopener noreferrer">to repair diplomatic ties</a>. </p><p>But the loss of such rich economies will prove a blow to COVAX and the ACT Accelerator. Vaccines are notoriously expensive and risky to develop; the costs to manufacture doses at scale will be immense. <a href="https://news.un.org/en/story/2020/08/1070162" target="_blank" rel="noopener noreferrer">WHO Director-General Tedros Adhanom Ghebreyesus</a> stated the ACT Accelerator would cost roughly $30 billion, and the final bill for the tools to combat novel coronavirus would be at least $100 billion. But that's a pittance compared to the <a href="https://www.reuters.com/article/us-health-coronavirus-imf/imf-says-10-trillion-spent-to-combat-pandemic-far-more-needed-idUSKBN23I27P" target="_blank" rel="noopener noreferrer">$10 trillion already spent on the pandemic</a> so far.</p><p>"COVID-19 is an unprecedented global crisis that demands an unprecedented global response," <a href="https://www.who.int/news-room/detail/21-09-2020-boost-for-global-response-to-covid-19-as-economies-worldwide-formally-sign-up-to-covax-facility" target="_blank" rel="noopener noreferrer">Tedros said</a>. "Vaccine nationalism will only perpetuate the disease and prolong the global recovery. Working together through the COVAX Facility is not charity, it's in every country's own best interests to control the pandemic and accelerate the global economic recovery."</p>
The winner won't necessarily take all<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQzNzY2My9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NjExMzA1M30.2kF2U_8veNWxmaxOnSned_WTQMRtscbB5dmT5efJHsc/img.jpg?width=1245&coordinates=0%2C180%2C0%2C181&height=700" id="55cd7" class="rm-shortcode" data-rm-shortcode-id="c56717cda300a40edc23795c8ee23c2f" data-rm-shortcode-name="rebelmouse-image" alt="SARS-CoV-2 vaccine" />
Positive, romantic thoughts could produce positive, romantic outcomes while dating.
- Fear of rejection, self-doubt, and anxiety are just some of the obstacles humans need to overcome to make a meaningful, romantic connection with another person.
- According to a 2020 project by a group of psychologists at the University of Rochester (and the Israeli-based Interdisciplinary Center Herzliya), humans see possible romantic partners as a lot more attractive if they go into the interaction with a "sexy mindset."
- Across three separate studies, this team discovered that this sexual activation helps people initiate relationships by inducing them to project their desires onto prospective partners.
Being in a frisky mood improves your chances with potential romantic partners<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQzNzk0OC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0Mjc3MDA5NH0.lwJquRq9_gTYX5c_2sRzCBfkyWldjMqCJig_kGCL1uA/img.jpg?width=1245&coordinates=0%2C6%2C0%2C98&height=700" id="f2719" class="rm-shortcode" data-rm-shortcode-id="9a29ad6b50ff3868c867fd2d0a64b8aa" data-rm-shortcode-name="rebelmouse-image" alt="man and woman on date woman" />
The right mood could land you the right date, according to a new study.
Credit: BlueSkyImage on Shutterstock<p><a href="https://www.eurekalert.org/pub_releases/2020-09/uor-ffm092320.php" target="_blank" rel="noopener noreferrer">According to a 2020 study</a> by a group of psychologists at the University of Rochester (and the Israeli-based Interdisciplinary Center Herzliya), humans see possible romantic partners as a lot more attractive if they go into the interaction with a "sexy mindset."</p><p><a href="https://www.sas.rochester.edu/psy/people/faculty/reis_harry/" target="_blank" rel="noopener noreferrer">Harry Reis</a>, professor of psychology and the Dean's Professor in Arts, Sciences & Engineering at Rochester, and <a href="https://www.idc.ac.il/en/pages/faculty.aspx?username=birnbag" target="_blank" rel="noopener noreferrer">Gurit Birnbaum</a>, a social psychologist and associate professor of psychology at the IDC (Interdisciplinary Center Herzliya) have dedicated decades of their lives to studying the intricate dynamics of sexual attraction and human sexual behavior. </p><p>In <a href="https://www.rochester.edu/newscenter/relationships-uncertainty-are-you-really-in-to-me-323512/" target="_blank" rel="noopener noreferrer">a previous study,</a> the pair discovered that when people feel greater certainty about a romantic partner's interest, they put more effort into seeing that person again. Additionally, this study found people will rate the possible partner as more "sexually attractive" if they knew the person was interested in seeing them again.</p><p><a href="https://www.eurekalert.org/pub_releases/2020-09/uor-ffm092320.php" target="_blank" rel="noopener noreferrer">For this project</a>, Reis and Birnbaum, along with their team, examined what would happen if a person's sexual system is activated by exposing them to brief sexual cues that induced a thought process that included the potential for sex or heightened attraction. </p><p>Across three separate studies, the team discovered that this sexual activation helps people initiate relationships by inducing them to project their desires onto prospective partners. </p><p><strong>Study one: Immediacy</strong></p><p>In the first study, 112 heterosexual participants (between the ages of 20-32) who were not in a romantic relationship were randomly paired with an unacquainted participant of the opposite sex. Participants introduced themselves to each other (speaking about their hobbies, positive traits, career plans, etc.), all while being recorded. </p><p>The team then coded the recorded interactions and searched for nonverbal expressions of immediacy (such as close proximity, frequent eye contact, smiles, etc.) that could indicate interest in starting a romantic relationship. </p><p>In the study, the team determined that the participants exposed to a sexual stimulus before the meeting (versus those exposed to a neutral stimulus) exhibited more immediacy behaviors towards their potential partners and also perceived the partners as more attractive and/or more interested in them. </p><p><strong>Study two: Interest</strong></p><p>In the second study, 150 heterosexual participants (between the ages of 19-30) who were not in a romantic relationship served as a control for the potential partner's attractiveness and reactions. All participants in study two watched the same pre-recorded video introduction of a potential partner of the opposite sex. They then introduced themselves to the partner while being filmed themselves. </p><p>The researchers found that the activation of the sexual system led to participants viewing the potential partner as more attractive as well as more interested in them. </p><p><strong>Study three: How it all ties together</strong></p><p>In the third and final study, the team investigated whether a partner's romantic interest could explain why sexual activation impacts how we view other people's romantic interest in ourselves. </p><p>In this study, 120 single heterosexual participants (between the ages of 21-31) interacted online with another participant who was actually an attractive opposite-sex member of the research team. This was a casual "get-to-know-you" kind of interaction. The participants rated their romantic interest in the other person as well as that person's attractiveness and interest in them.</p><p>Again, the team found that sexual activation increased a person's romantic interest in the other person, which, in turn, predicted that the other person would then be more interested in a romantic partnership as well. </p><p><strong>The takeaway: Positive, romantic thoughts could produce positive, romantic outcomes. </strong></p><p>The basis of this multi-study theory is simple: Having active sexual thoughts arouses romantic interest in a prospective partner and often leads to an optimistic outlook on dating. </p><p>"Sexual feelings do more than just motivate us to seek out partners. It also leads us to project our feelings onto the other person," <a href="https://www.eurekalert.org/pub_releases/2020-09/uor-ffm092320.php" target="_blank">said Reis to Eurekalert</a>. </p><p>Reis goes on to explain, "...the sexual feelings need not come from the other person; they can be aroused in any number of ways that have nothing to do with the other person."</p>
New research conducted on mice suggests repeated heavy drinking causes synaptic dysfunctions that lead to anxiety.