Stem Cells

 
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Unmoderated Tag: TEDTalks Rating: No Votes Hits: 93 Comments: 0 Ted Talks: Nina Tandon: Could Tissue Engineering Mean Personalized Medicine? Ted Talks: Nina Tandon: Could Tissue Engineering Mean Personalized Medicine? Each of our bodies is utterly unique, which is a lovely thought until it comes to treating an illness -- when every body reacts differently, often unpredictably, to standard treatment. Tissue engineer Nina Tandon talks about a possible solution: Using pluripotent stem cells to make personalized models of organs on which to test new drugs and treatments, and storing them on computer chips. (Call it extremely personalized medicine.) Dec 6, 2012 10:02 AM
Unmoderated Tag: Politics Rating: No Votes Hits: 144 Comments: 0 'Cell Reprogramming' Wins Nobel for Japanese Scientist (LinkAsia: 10/12/12) 'Cell Reprogramming' Wins Nobel for Japanese Scientist (LinkAsia: 10/12/12) Shinya Yamanaka and British scientist John Gurdon have won the Nobel Prize in Medicine for discoveries relating to stem cell research. The Japanese researcher found out how to create tissue that would act like embryonic cells, without the need to harvest human embryos. Watch more at http://linkasia.org. IMAGE: Kyoto University Professor Shinya Yamanaka talks with Japan's Prime Minister Yoshihiko Nada by a mobile phone during a news conference in Kyoto: REUTERS/Kyodo Oct 12, 2012 5:03 PM
Headline Tag: Science Rating: Amazing Hits: 1641 Comments: 0 Bill Nye: Greatest Discoveries : Biology Bill Nye: Greatest Discoveries : Biology Broadcast 2007. Hundreds of years before the DNA test, Micrographia championed the use of microscopes and set the stage for the first major discovery in biology: microorganisms. Learn how the secret of the cell was solved and how starfish led to the development of stem cell research. Where would we be today if it weren't for the scientists of the past? From the miniature world of genetics to the vast expanse of space, review the greatest discoveries of all time in this multi part series. Join host Bill Nye as he recounts the 100 most important discoveries and explains how each one has had a hand in shaping the modern world. Learn how the great discoveries were made, how they impacted the development of scientific knowledge. Discoveries Covered In This Episode: 1. Microorganisms (1674) Microscope lens grinder Anton Van Leeuwenhoek accidentally discovers microorganisms in a drop of water. Using his own microscopes, he observes sperm, bacteria and red blood cells. His observations lay the foundation for the sciences of bacteriology and microbiology. 2. The Cell Nucleus (1831) While studying an orchid, botanist Robert Brown identifies a structure within the cells that he terms the "nucleus." 3. Archaea (1977) Carl Woese discovers bacteria are not the only simple celled prokaryotes (unicellular organisms without a nucleus) on Earth. Many of the organisms classified in the new kingdom of Archaea are extremophiles. Some live at very high or low temperatures, others in highly saline, acidic or alkaline water. Some have been found in environments like marshland, sewage and soil. Archaea are usually harmless to other organisms and none are known to cause disease. 4. Cell Division (1879) Walther Flemming carefully observes that animal cells divide in stages and calls the process mitosis. Eduard Strasburger independently identifies a similar process in plant cells. 5. Sex Cells (1884) August Weismann identifies that sex cells must have divided differently to end up with only half of a chromosomal set. This very special division of sex cells is called meiosis. Weismann's experiments with reproduction in jellyfish lead him to the conclusion that variations in offspring result from the union of a substance from the parents. He refers to this substance as "germ plasm." 6. Cell Differentiation (late 19th century) Several scientists participate in the discovery of cell differentiation, eventually leading to the isolation of human embryonic stem cells. During differentiation, a cell turns into one of the many cell types that make up the body, such as a lung, skin or muscle cell. Certain genes are activated and others are inactivated, so the cell develops structures to perform a specific function. Cells that are not yet differentiated and have the potential to become any type of cell are called stem cells. 7. Mitochondria (late 19th century to the present) Scientists discover mitochondria, the powerhouses of the cell. These small structures within animal cells are responsible for metabolism and convert food into chemicals that cells can use. Scientists now believe they are specialized bacteria with their own DNA. 8. The Krebs Cycle (1937) Hans Krebs identifies the many steps the cell takes to convert sugars, fats and proteins into energy. Also known as the citric acid cycle, it is a series of chemical reactions using oxygen as part of cellular respiration. The cycle contributes to the breakdown of carbohydrates, fats and proteins into carbon dioxide and water. 9. Neurotransmission (late 19th to early 20th century) Discovery of neurotransmitters, how they tell the body what to do by passing signals from one nerve cell to another via chemical substances or electrical signals. 10. Hormones (1903) William H. Bayliss and Ernest H. Starling give hormones their name and reveal their role as chemical messengers. The team specifically describes secretin, a substance released into the blood from the duodenum (between the stomach and small intestine) that stimulates secretion of pancreatic digestive juice into the intestine. 11. Photosynthesis (1770s) Jan Ingenhousz discovers that plants react to sunlight differently than shade. The underpinnings of the understanding of photosynthesis are born. Photosynthesis is a process in which plants, algae and certain bacteria convert the energy of light into chemical energy. In plants, leaves take in carbon dioxide and roots absorb water. Sunlight runs a reaction that yields glucose (food for the plant) and oxygen (a waste product released into the environment). Nearly all living things on Earth are dependent on this process. User: spam_vigilante Sep 29, 2012 2:56 AM
Headline Tag: Science Rating: Bad Hits: 501 Comments: 0 Ted Talks: Susan Solomon: The Promise of Research with Stem Cells Ted Talks: Susan Solomon: The Promise of Research with Stem Cells Calling them "our bodies' own repair kits," Susan Solomon advocates research using lab-grown stem cells. By growing individual pluripotent stem cell lines, her team creates testbeds that could accelerate research into curing diseases -- and perhaps lead to individualized treatment, targeted not just to a particular disease but a particular person. Sep 13, 2012 11:02 AM
Headline Tag: Politics Rating: Good Hits: 829 Comments: 2 SciShow: Lab-Grown Meat SciShow: Lab-Grown Meat Hank brings us the strange story of in vitro meat - muscle tissue grown in laboratories with the hope that someday we will eat it. Like SciShow: http://www.facebook.com/scishow Follow Scishow: http://www.twitter.com/scishow References for this episode can be found in the Google document here: http://dft.ba/-3sYA scishow, science, meat, laboratory, in vitro meat, vegetarian, vegan, cultured meat, test-tube meat, hydroponic, schmeat, stem cells, embryo, satellite cell, petri dish, collagen, muscle fiber, muscle tissue, electrical impulse, PETA, health, food, eat, winston churchill, lab meat, alternative, netherlands, gross, environment, resource, greenhouse gas, emission, land use, cost, artificial User: SilenTom Aug 28, 2012 3:41 PM
Headline Tag: Science Rating: Amazing Hits: 1213 Comments: 3 Sam Harris: Stem Cells and Morality Sam Harris: Stem Cells and Morality A section from Sam Harris' talk at the Beyond Belief 2 conference. Harris argues that religion obscures moral intuitions, using the case of stem cells. Check out The Science Network at http://thesciencenetwork.org/ Mar 6, 2012 8:42 PM
Unmoderated Tag: Science Rating: Amazing Hits: 333 Comments: 1 Bill Nye: Biology Bill Nye: Biology Broadcast (2007). 100 Greatest Discoveries. Where would we be today if it weren't for the scientists of the past? From the miniature world of genetics to the vast expanse of space, review the greatest discoveries of all time across eight different scientific categories in this multi-part series. Join host Bill Nye as he recounts the 100 most important discoveries and explains how each one has had a hand in shaping the modern world. Watch his lively and dramatic accounts and learn how the great discoveries were made, how they impacted the development of scientific knowledge and how they touch our lives today. Hundreds of years before the first DNA test, "Micrographia" championed the use of microscopes and set the stage for the first major discovery in biology: microorganisms. Learn how the secret of the cell was solved and how starfish led to the development of stem cell research. User: spam_vigilante Aug 7, 2011 4:28 AM
Headline Tag: Television Rating: Amazing Hits: 1098 Comments: 4 The Skin Gun The Skin Gun A simple idea backed by stem cell research allows victims of severe burns to heal in merely days. Explorer : How to Build a Beating Heart : MON FEB 7 10p et/pt : http://channel.nationalgeographic.com/series/explorer/4828/Overview User: garfag Jun 20, 2011 12:28 PM
Permanent Tag: Television Rating: Good Hits: 427 Comments: 1 How Science Changed Our World How Science Changed Our World BBC1 23 December 2010 Professor Robert Winston presents his top ten scientific breakthroughs of the past 50 years. Tracing these momentous and wide-ranging discoveries, he meets a real-life bionic woman, one of the first couples to test the male contraceptive pill, and even some of his early IVF patients. He explores the origins of the universe, probes the inner workings of the human mind and sees the most powerful laser in the world. To finish, Professor Winston reveals the breakthrough he thinks is most significant. The 10: Stem cell research Bio-mechanics The Contraceptive Pill Decoding the Human Genome The Internet IVF The laser The microchip MRI scanning Increasing Evidence for the Big Bang User: spam_vigilante Dec 27, 2010 7:41 PM
Headline Tag: Politics Rating: Amazing Hits: 1366 Comments: 1 Fighting the Good Fight Fighting the Good Fight The National Center for Science Education ( http://ncse.com ) is instrumental in keeping pseudo-science out of the class room. This is the sort of action that will lead to a more scientifically literate US, that can make better decisions and more efficiently compete on the global stage. Historically this has been mostly about keeping religion such as creationism out of the science classroom, however more recently this has expanded to include things like climate change, and stem cell research. The aim is to stop filling kids heads with pseudo science when they are young. This is also not just a matter for Americans either, for even now, America is the prime exporter of creation ideas. Put simply supporting the NCSE is like lending your neighbor a fire hose when his house is on fire! The National Center for Science Education website: http://ncse.com dl this video @ http://www.mediafire.com/?fz16hf5q8sjy51d User: spam_vigilante Nov 15, 2010 9:41 AM
Permanent Tag: Science Rating: Good Hits: 506 Comments: 2 Jonathan Garlick: Stem Cell Rap Jonathan Garlick: Stem Cell Rap Tufts Univ. professor Jonathan Garlick raps about the importance of knowing about stem cells. With some help from MIA, Dr. Garlick explains that all he wants to do is cure disease. Stem cells can help. But first, we need a national conversation that acknowledges both the positives and the negatives, and laws that reflect nuanced reality, rather than panic. User: spam_vigilante Nov 15, 2010 2:47 AM
Permanent Tag: Politics Rating: Amazing Hits: 526 Comments: 0 Give Us Liberty? Give Us Liberty? Q&A; with Dick Armey & Matt Kibbe of Freedom Works Sen. Lisa Murkowski (R-Alaska) is the latest victim of the Tea Party insurgency that's trying to take over the Republican Party. Tea Party favorite Joe Miller defeated Murkowski in The North Star State's primary by hammering away at (among other things) her support for TARP and lack of zeal for overturning Obamacare. Miller joins a new breed of anti-spending candidates such as Maine's Paul LePage, Kentucky's Rand Paul, Florida's Marco Rubio, and South Carolina's Nikki Haley, who promise to bring a new passion for shrinking government to D.C. and state capitals. Here's how Freedom Works' Dick Armey and Matt Kibbe sum up what the Tea Party stands for in their new book, GIVE US LIBERTY: A TEA PARTY MANIFESTO: "It doesn't take a lot of words to say that we just want to be free. Free to lead our lives as we please, so long as we don't infringe on the same freedom of others." Armey and Kibbe say that the Tea Party coheres around spending and that other issues are not central to its mission. Perhaps. Joe Miller is also pro-life, pro border fence, and wants to outlaw the use of embryonic stem cells in medical research. Maine gubernatorial hopeful LePage believes the "traditional definition of marriage should be preserved." Haley, who will probably be South Carolina's next governor, has campaigned on tough enforcement against illegal immigrants. And the closest thing to a Tea Party spokesperson is Sarah Palin, the former "Bridge to Nowhere" supporter who oversaw a 16 percent increase in spending during her time as governor of Alaska. Can this coalition stay together, stick to its anti-spending message, and actually change American politics? Or will it be co-opted by the very party upon which it seeks to perform a "hostile takeover?" Reason.tv's Nick Gillespie sat down with Armey and Kibbe to discuss these issues and more. The interview was shot by Jim Epstein and Meredith Bragg, and edited by Epstein and Joshua Swain. Approximately 9.30 minutes. User: Pantufas Sep 3, 2010 1:37 AM
Unmoderated Tag: Politics Rating: No Votes Hits: 399 Comments: 0 Ted Talks: Daniel Kraft Invents a Better Way to Harvest Bone Marrow Ted Talks: Daniel Kraft Invents a Better Way to Harvest Bone Marrow http://www.ted.com Daniel Kraft demos his Marrow Miner -- a new device that quickly harvests life-saving bone marrow with minimal pain to the donor. He emphasizes that the adult stem cells found in bone marrow can be used to treat many terminal conditions, from Parkinson's to heart disease. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes. Featured speakers have included Al Gore on climate change, Philippe Starck on design, Jill Bolte Taylor on observing her own stroke, Nicholas Negroponte on One Laptop per Child, Jane Goodall on chimpanzees, Bill Gates on malaria and mosquitoes, Pattie Maes on the "Sixth Sense" wearable tech, and "Lost" producer JJ Abrams on the allure of mystery. TED stands for Technology, Entertainment, Design, and TEDTalks cover these topics as well as science, business, development and the arts. Closed captions and translated subtitles in a variety of languages are now available on TED.com, at http://www.ted.com/translate. Watch a highlight reel of the Top 10 TEDTalks at http://www.ted.com/index.php/talks/top10 Jul 15, 2009 11:05 AM
Unmoderated Tag: Television Rating: No Votes Hits: 309 Comments: 0 Mosaic News: 2/25/2009: World News from the Middle East Mosaic News: 2/25/2009: World News from the Middle East Mosaic needs your help! Donate here: http://www.linktv.org/contribute "Pakistan's supreme court disqualifies former PM Nawaz Sharif from elections," Al Jazeera TV, Qatar "Renewed fighting in Somalia undermines new government," Al Arabiya TV, UAE "Israel bombs Hamas tunnels," Al Jazeera English, Qatar "Netanyahu turns right in search for Israel coalition," IBA TV, Israel "Najaf Suffers from Neglect," Baghdad TV, Iraq "300,000 Widows in Baghdad," Nile TV, Egypt "Iraqi Doctors Peform Stem Cell Surgeries," Al-Iraqiya TV, Iraq "Dubai's Financial Crisis on the Mend," Dubai TV, UAE "Syrian Writer Wins Prize for Arabic Fiction," Al Arabiya TV, UAE Produced for Link TV by Jamal Dajani. Feb 26, 2009 12:32 PM
Unmoderated Tag: Television Rating: No Votes Hits: 401 Comments: 0 South Park: Heat of the Moment South Park: Heat of the Moment Cartman pleas with Congress for stem cell research. And he wins them over with a timeless song. From South Park. Feb 6, 2009 9:28 PM
 
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