An Infinite Extra Dimension
Lisa Randall studies theoretical particle physics and cosmology at Harvard University. Her research connects theoretical insights to puzzles in our current understanding of the properties and interactions of matter. She has developed and studied a wide variety of models to address these questions, the most prominent involving extra dimensions of space. Her work has involved improving our under-standing of the Standard Model of particle physics, supersymmetry, baryogenesis, cosmological inflation, and dark matter. Randall’s research also explores ways to experimentally test and verify ideas and her current research focuses in large part on the Large Hadron Collider and dark matter searches and models.
Randall has also had a public presence through her writing, lectures, and radio and TV appearances. Randall’s books, Warped Passages: Unraveling the Mysteries of the Universe’s Hidden Dimensions and Knocking on Heaven’s Door: How Physics and Scientific Thinking Illuminate the Universe and the Modern World were both on the New York Times’ list of 100 Notable Books of the Year. Higgs Discovery: The Power of Empty Space was released as a Kindle Single in the summer of 2012 as an update with recent particle physics developments.
Randall’s studies have made her among the most cited and influential theoretical physicists and she has received numerous awards and honors for her scientific endeavors. She is a member of the National Academy of Sciences, the American Philosophical Society, the American Academy of Arts and Sciences, was a fellow of the American Physical Society, and is a past winner of an Alfred P. Sloan Foundation Research Fellowship, a National Science Foundation Young Investigator Award, a DOE Outstanding Junior Investigator Award, and the Westinghouse Science Talent Search. Randall is an Honorary Member of the Royal Irish Academy and an Honorary Fellow of the British Institute of Physics. In 2003, she received the Premio Caterina Tomassoni e Felice Pietro Chisesi Award, from the University of Rome, La Sapienza. In 2006, she received the Klopsteg Award from the American Society of Physics Teachers (AAPT) for her lectures and in 2007 she received the Julius Lilienfeld Prize from the American Physical Society for her work on elementary particle physics and cosmology and for communicating this work to the public.
Randall has also pursued art-science connections, writing a libretto for Hypermusic: A Projective Opera in Seven Planes that premiered in the Pompidou Center in Paris and co-curating an art exhibit for the Los Angeles Arts Association, Measure for Measure, which was presented in Gallery 825 in Los Angeles, at the Guggenheim Gallery at Chapman University, and at Harvard’s Carpenter Center. In 2012, she was the recipient of the Andrew Gemant Award from the American Institute of Physics, which is given annually for significant contributions to the cultural, artistic, or humanistic dimension of physics.
Professor Randall was on the list of Time Magazine's "100 Most Influential People" of 2007 and was one of 40 people featured in The Rolling Stone 40th Anniversary issue that year. Prof. Randall was featured in Newsweek's "Who's Next in 2006" as "one of the most promising theoretical physicists of her generation" and in Seed Magazine's "2005 Year in Science Icons". In 2008, Prof. Randall was among Esquire Magazine's “75 Most Influential People.”
Professor Randall earned her PhD from Harvard University and held professorships at MIT and Princeton University before returning to Harvard in 2001. She is also the recipient of honorary degrees from Brown University, Duke University, Bard College, and the University of Antwerp.
Question: What was the greatest “Eureka!” moment in your career?
Lisa Randall: I mean, for any problem you work on there’s some moment where there’s sort of maybe it’s a moment where no one else cares about, where it all fits together and I found some simple way of doing something. There are also the models that people have heard about such as the models about extra dimensions, something else that we did having to do with a different way of communicating supersymmetry breaking. There were a lot of eureka moments in that and making it work out and the fact that we could all tie it together. So, it’s hard for me to pull those out because a lot of the time when you’re working on something there’s that one thing that you get excited about.
Question: Have you ever been completely surprised by the result of an experiment?
Lisa Randall: I think one thing that surprised us, Braman and I, when we were working together was this existence, or the possibility of the existence, of an infinite extra dimension. People had actually thought there were theorems that you couldn’t have an infinite extra dimension, that gravity would just look wrong, that there was no consistent way to do it. And it was really interesting because we came across this by really following the consequence of our equations to the end and there was just no mistaking that it was allowing the possibility of an infinite extra dimension. And it was interesting to go back and see what assumptions have been made that made us think, or made other people think that it was impossible, and just to see how the theory was almost smarter than we were and worked it out. That was kind of fun.
Recorded on February 17, 2010
Interviewed by Austin \r\nAllen
The Harvard physicist describes one of her most surprising moments of discovery.
Tea and coffee have known health benefits, but now we know they can work together.
Credit: NIKOLAY OSMACHKO from Pexels
- A new study finds drinking large amounts of coffee and tea lowers the risk of death in some adults by nearly two thirds.
- This is the first study to suggest the known benefits of these drinks are additive.
- The findings are great, but only directly apply to certain people.
Maybe you should enjoy this article with a cup of coffee or tea.<p> The <a href="https://drc.bmj.com/content/8/1/e001252?T=AU" target="_blank" rel="noopener noreferrer">study</a> involved 4,923 type 2 diabetics living in Japan. The average participant was 66 years old. All of the participants were taken from the rolls of the Fukuoka Diabetes Registry, a study geared at learning about the effects of new treatments and lifestyle changes on the health of diabetics. <br> <br> The participants filled out questionnaires concerning their health, diet, habits, and other factors. Among the questions were two focused on determining how much green tea or coffee, if any, the participants consumed over the course of a week. The health of the participants was recorded for five years. During this time, 309 of the test subjects died from a variety of causes. <br> <br> Subjects who drank more than one cup of tea or coffee per day demonstrated lower odds of dying than those who had none. Those who consumed the most tea and coffee, more than four and two cups a day, respectively, enjoyed the most significant reductions in their risk of death. This level of consumption was associated with a 40 percent lower risk of <a href="https://www.sciencedaily.com/releases/2020/10/201020190129.htm" target="_blank" rel="noopener noreferrer">death</a>. </p><p>Most interestingly, the effects of drinking tea and coffee appear to combine to reduce risk even further. Those who reported drinking two or three cups of tea a day and two or more cups of coffee were 51 percent less likely to die during the study, while those who drank a whopping four or more cups of tea and two or more cups of coffee had a 63 percent lower risk of <a href="https://www.medicalnewstoday.com/articles/diabetes-coffee-and-green-tea-might-reduce-death-risk" target="_blank" rel="noopener noreferrer">death</a>. </p>
So, should I start swimming in a vat of coffee and green tea?<iframe width="730" height="430" src="https://www.youtube.com/embed/LY0E-JQxeoY" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe><p> Not quite. </p><p> The primary takeaway from this study is that Japanese adults with type 2 diabetes who drink a lot of green tea and/or coffee die less often than similar people who do not. If this effect is caused by something in the drink, lifestyle choices people who drink that much tea all make, or something else remains unknown. The finding must be considered an association at this point. <br> <br> The eye-popping reductions in mortality rates are compared to the risk of death of others in the study. The people who died reported drinking less tea and coffee than those who lived. Unless you have several demographic and conditional similarities to the subjects of this study, you probably won't suddenly be at a two-thirds lower risk of death than your peers because you drink green tea. </p><p> Like all studies that depend on self-reporting, it is also possible that people misstated how much they consumed any one item. The study also did not look into other factors like socioeconomic status or education level, also known to impact death rates and potentially linked to coffee and tea consumption. </p><p> However, it is yet another study in the pile that suggests that <a href="https://www.healthline.com/nutrition/top-13-evidence-based-health-benefits-of-coffee" target="_blank" rel="noopener noreferrer">coffee</a> and <a href="https://www.healthline.com/nutrition/top-10-evidence-based-health-benefits-of-green-tea" target="_blank" rel="noopener noreferrer">green tea</a> are good for you. That much is increasingly <a href="https://www.health.harvard.edu/press_releases/health-benefits-linked-to-drinking-tea" target="_blank" rel="noopener noreferrer">agreed</a><a href="https://www.rush.edu/health-wellness/discover-health/health-benefits-coffee" target="_blank" rel="noopener noreferrer"> upon</a>. This study also suggests the benefits are additive, which is a new development.</p><p><br> So, while it isn't time to start the IV drip of green tea, a cup or two probably won't <a href="https://www.webmd.com/diabetes/news/20201022/coffee-green-tea-might-extend-life-for-folks-with-type-2-diabetes" target="_blank" rel="noopener noreferrer">hurt</a>. </p>
But most city dwellers weren't seeing the science — they were seeing something out of Blade Runner.
On Sept. 9, many West Coast residents looked out their windows and witnessed a post-apocalyptic landscape: silhouetted cars, buildings and people bathed in an overpowering orange light that looked like a jacked-up sunset.
Famous physicists like Richard Feynman think 137 holds the answers to the Universe.
- The fine structure constant has mystified scientists since the 1800s.
- The number 1/137 might hold the clues to the Grand Unified Theory.
- Relativity, electromagnetism and quantum mechanics are unified by the number.
India finishes last of 60 countries in environment and sustainability, as ranked by the expats who work there.
- How 'green' is life in your work country?
- That's the question InterNations asked its network of expats.
- The United States ended 30th out of 60 countries.
Nordics on top<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2NjgyNy9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NTczNzkyOX0.VgfqyjAa9avw6gFOE0qlgSgKuBN7DJmzOc5lzFGLm8g/img.jpg?width=980" id="1f0dc" class="rm-shortcode" data-rm-shortcode-id="b27458cf472d26cf1f87cb91623a0621" data-rm-shortcode-name="rebelmouse-image" alt="Evo Hiking Area, H\u00e4meenlinna, Finland." />
Evo Hiking Area in Hämeenlinna, Finland. Great nature, clean air, clean water? Check, check and check.
Credit: Kanta-Hämeen kuvapankki on Flickr/ Public Domain.<p><br><strong>1. Finland</strong></p><p>The Nordic country scores at or near the top in all categories surveyed, including the quality of the natural environment (say 96 percent of expats in Finland), water and sanitation (96 percent) and air (95 percent). <br></p><p><strong>2. Sweden</strong></p><p>Swedes lead the world in environmental awareness (84 percent versus just 48 percent globally). Perhaps not surprising, for the homeland of <a href="https://bigthink.com/politics-current-affairs/greta-effect" target="_blank">Greta Thunberg</a>. This is reflected by government policy. Sweden currently gets more than 50 percent of its power from renewable sources and wants to go 100% renewable before 2040. "I've been here for over 20 years and I clearly see the benefits of my taxes paid coming back to me and the rest of society," says one American expat.<br></p><p><strong>3. Norway</strong></p><p>"The beautiful nature, the clean air and tap water, and the focus on the environment," are what one Ukrainian expat enjoys most about Norway. With 76 percent of expats happy with the availability of green goods and services, Norway's 'weakest' category is still 13 percentage points above the global average. <br></p><p><strong>4. Austria</strong></p><p>The first non-Nordic in the global ranking, Austria places in the Top 10 for each category and comes in first for the availability of green goods and services (90 percent). <br></p><p><strong>5. Switzerland</strong></p><p>Swiss nature is the most appreciated in the world (98 percent versus 83 percent on average). Switzerland also gets stellar results for air and water quality and the availability of green energy and green goods and services. </p><p><strong>6. Denmark</strong></p><p>Danes are very much into green causes, as is their government, say 83 percent resp. 84 percent of expats. "Organic food is readily available, and they are good with recycling," observes a South African expat. And they love cycling: 9 out of 10 Danes own a bike.</p><p><strong>7. New Zealand</strong></p><p>85 percent of expats agree that the New Zealand government takes green issues seriously. In fact, New Zealand plans to use 90 percent electricity from renewables by 2025. The country also scores high on the quality of its natural environment and all other categories – albeit slightly less on the quality of its water and sanitation.</p><p><strong>8. Germany</strong></p><p>"I enjoy the rising awareness about environmental issues and the alternatives the government and society are developing," says one Colombian expat. Indeed, 80 percent of expats agree the German government is pro-environment (versus 55 percent globally). <br></p><p><strong>9. Canada</strong></p><p>The only North American destination in the Top 10, thanks especially to expat appreciation of Canada's natural environment (96 percent), but also the quality of its water and sanitation (90 percet) and the availability of green goods and services (80 percent). <br></p><p><strong>10. Luxembourg</strong></p><p>"Access to nature for hiking and bicycling" is a definite boon for one American expat. In fact, the country's natural environment, although ranking 13th out of 60, is its lowest-rated subcategory. Luxembourg does even better when it comes to green energy, waste management, and the quality of its air and water.</p>
Taiwan, most sustainable destination in Asia<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2Njg1Ni9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1NzkxMDAxNH0.Roy7h_Od1cmaqBmamk-DP4rKMpLjTM-qIajG96alZAg/img.jpg?width=980" id="00799" class="rm-shortcode" data-rm-shortcode-id="dab52370e1edb5da5ebb0f5631027b1c" data-rm-shortcode-name="rebelmouse-image" alt="\u200bEternal Spring Shrine in the Taroko Gorge, Hualien County, Taiwan." />
Eternal Spring Shrine in the Taroko Gorge, Hualien County. Outside of Taipei, Taiwan can be surprisingly green and beautiful.
Credit: Zairon, CC BY-SA 4.0<p><strong>11. Taiwan</strong></p><p>The highest-scoring expat destination in Asia, Taiwan boasts 92 percent approval of its waste management and recycling, and 80 percent of the availability of green goods and services. But "the air pollution (in Taipei) is getting worse because it is too crowded," one expat complains.</p><p><strong>12. Netherlands</strong></p><p>Green goods and services are widely available, agree 82 percen of expats, as is green energy. However, 13 percent rate the Dutch environment negatively, 4 percet above the global average. <br></p><p><strong>13. Portugal</strong></p><p>Well ahead of its neighbor Spain (#20), the country scores high for air quality (91 percent) and natural environment (95 percent). "I like the opportunity for gardening and growing our own food," says one expat. <br></p><p><strong>14. Estonia</strong></p><p><strong></strong>Estonia scores in the Top 20 for every category and gets its highest marks for its natural environment. "A beautiful country with excellent air quality and open spaces," praises an Indian expat.<br></p><p><strong>15. Costa Rica</strong></p><p><strong></strong>Both the government and the people are very supportive of green policies, find 82 percent, resp. 67 percent of expats. "It's easy to live a healthy lifestyle with regard to the food, climate, clean air and water," says one. Costa Rica won the 2019 UN Champion of the Earth award and has pledged to go carbon neutral by 2050.<br></p><p><strong>16. Czechia</strong></p><p><strong></strong>"The beauty of the environment" is one of the best things about living in Czechia, says a Russian expat. No less than 97 percent of expats agree.<br></p><p><strong>17. France</strong></p><p><strong></strong>77 percent of expats are happy about the availability of green goods and services in France, which is 14 percentage points above average. The country also scores well for waste management and recycling. In short, France has a "good, green and clean environment," one Iranian expat finds. <strong><br></strong></p><p><strong>18. Australia</strong></p><p><strong></strong>While ranking high on the quality of its nature, water and air, Australia scores low when it comes to government support for green issues (51 percent). Fortunately, expats see more interest among the general population (68 percent). </p><p><strong>19. Singapore</strong></p><p><strong></strong>Expats rate the government's interest in green issues higher than globally average (77 percent versus 55 percent), but the Singaporean public's engagement for the same less than average (40 percent versus 48 percent). Of course, in a small, crowded place like Singapore, "(nature) spots are limited."<br></p><p><strong>20. Spain</strong></p><p>Spain's "scenery, diversity of places to visit and healthier environment" are what rate highly with one British expat. Its weak point is governmental and public support for green issues – but still slightly above the global average. <br></p>
London is "polluted and noisy"<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2Njg4Ni9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NDg3NjkyOH0.3ySSD7jFBfAWA07u-EN-oL9x9cq9FZn06iz5aV0hEOw/img.jpg?width=980" id="f5630" class="rm-shortcode" data-rm-shortcode-id="80c9fa119e7ff3acc91e027b7529bfed" data-rm-shortcode-name="rebelmouse-image" alt="\u200bEven at 2:30pm, London gets clogged." />
Afternoon traffic jam in London.
World map for the 'sustainable expat'<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2Njg5MC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYzMzAyNjQ2MH0.hjRiMDmOSnn9EvKJtx_tlzql3Gf7ph8lt8bL6dPCft4/img.png?width=980" id="def5d" class="rm-shortcode" data-rm-shortcode-id="149be2f5a19cc625cb555d8078f62ce2" data-rm-shortcode-name="rebelmouse-image" alt="The best & worst destiations for the sustainable expat" />
Sixty expat destinations ranked for sustainability, from best (orange) to worst (light blue). In between: fairly okay (brown), middling (grey) and not that great (dark blue).
South Korea's "rather horrible" air<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2NjkxNS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY2MTY1MjIwNn0.2e6eBIc38sAZLFQGKw4UL3-SY3hA9NthX0Uj9L4ibZA/img.jpg?width=980" id="c10db" class="rm-shortcode" data-rm-shortcode-id="cba918e6e5455c2e5ff4f9d5caf54775" data-rm-shortcode-name="rebelmouse-image" alt="\u200bSmoggy Seoul" />
Seoul's air quality is so bad you can picture it. Only India's air is perceived as worse than South Korea's, according to the expat survey.
Bad, worse, India<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU2Njk0MS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NTcyMTczMH0.Pt2bGDrpSKSwVjimMK_iK0Jejpu8ILn77VEzHTdzQQ4/img.jpg?width=980" id="28411" class="rm-shortcode" data-rm-shortcode-id="8b8b602261a168a46b05c53e09ab1b02" data-rm-shortcode-name="rebelmouse-image" alt="man standing surrounded by garbage" />
India scores worst in all three categories, but to be fair – some of its problems were imported from more developed countries.