Richard Harris http://kuow.org en First Embryonic Stem Cells Cloned From A Man's Skin http://kuow.org/post/first-embryonic-stem-cells-cloned-mans-skin Eighteen years ago, scientists in Scotland took the nuclear DNA from the cell of an adult sheep and put it into another sheep's egg cell that had been emptied of its own nucleus. The resulting egg was implanted in the womb of a third sheep, and the result was Dolly, the first clone of a mammal.<p>Dolly's birth set off a huge outpouring of ethical concern — along with hope that the same techniques, applied to human cells, could be used to treat myriad diseases.<p>But Dolly's birth also triggered years of frustration. Thu, 17 Apr 2014 18:14:00 +0000 Richard Harris 32741 at http://kuow.org First Embryonic Stem Cells Cloned From A Man's Skin Ebola Drug Could Be Ready For Human Testing Next Year http://kuow.org/post/ebola-drug-could-be-ready-human-testing-next-year The <a href="http://www.npr.org/blogs/health/2014/04/08/300509073/the-ebola-outbreak-three-weeks-in-dire-but-not-hopeless">Ebola outbreak</a> in West Africa is terrifying because there's no drug to treat this often fatal disease. But the disease is so rare, there's no incentive for big pharmaceutical companies to develop a treatment.<p>Even so, some small companies, given government incentives, are stepping into that breach. The result: More than half a dozen ideas are being pursued actively.<p>And these are boon days for drugs that can treat viruses. Fri, 11 Apr 2014 20:30:00 +0000 Richard Harris 32399 at http://kuow.org Ebola Drug Could Be Ready For Human Testing Next Year How Mouse Studies Lead Medical Research Down Dead Ends http://kuow.org/post/how-mouse-studies-lead-medical-research-down-dead-ends Most experimental drugs fail before they make it through all the tests required to figure out if they actually work and if they're safe. But some drugs get fairly far down that road, at the cost of hundreds of millions of dollars, based on poorly conducted studies at the outset.<p>Medical researchers reviewing this sorry state of affairs say the drug-development process needs serious improvement.<p>Consider drugs that are being developed to treat <a href="http://www.nlm.nih.gov/medlineplus/amyotrophiclateralsclerosis.html">ALS</a>, or Lou Gehrig's disease. Tue, 08 Apr 2014 07:44:00 +0000 Richard Harris 32092 at http://kuow.org How Mouse Studies Lead Medical Research Down Dead Ends Simple Blood Test To Spot Early Lung Cancer Getting Closer http://kuow.org/post/simple-blood-test-spot-early-lung-cancer-getting-closer One of these days, there could well be a simple blood test that can help diagnose and track cancers. We aren't there yet, but a burst of research in this area shows we are getting a lot closer.<p>In the latest of these studies, scientists have used blood samples to identify people with lung cancer.<p>At the Stanford School of Medicine, <a href="http://stemcell.stanford.edu/about/Laboratories/diehn/index.html">Dr. Maximilian Diehn</a> spends some of his time as a radiation oncologist treating patients with cancer, and some of his time delving into the world of DNA. Sun, 06 Apr 2014 17:22:00 +0000 Richard Harris 32008 at http://kuow.org Simple Blood Test To Spot Early Lung Cancer Getting Closer Custom Chromo: First Yeast Chromosome Built From Scratch http://kuow.org/post/custom-chromo-first-yeast-chromosome-built-scratch Using the labor of dozens of undergraduate students, scientists have built a customized yeast chromosome from scratch.<p>It's a milestone in the rapidly growing field of synthetic biology, where organisms can be tailored for industrial use. In this case, the near-term goal is to understand the genetics of yeast, and eventually the genetics of us.<p>This was quite an undertaking. Yeast have about 6,000 genes packed in 16 tidy bundles called chromosomes. Thu, 27 Mar 2014 21:05:00 +0000 Richard Harris 31423 at http://kuow.org Custom Chromo: First Yeast Chromosome Built From Scratch Fewer People Are Getting Infections In Hospitals, But Many Still Die http://kuow.org/post/fewer-people-are-getting-infections-hospitals-many-still-die Hospital-acquired infections continue to be a big problem in health care, with 4 percent of patients getting a new infection while hospitalized, a study finds. And 11 percent of those infections turn deadly.<p>It's the first time that the Centers for Disease Control and Prevention has attempted to catalog all hospital infections, not just the infections with germs on their watch list. Wed, 26 Mar 2014 16:19:58 +0000 Richard Harris 31306 at http://kuow.org Fewer People Are Getting Infections In Hospitals, But Many Still Die Never Mind Eyesight, Your Nose Knows Much More http://kuow.org/post/never-mind-eyesight-your-nose-knows-much-more The human eye can distinguish more than 2 million distinct colors. But scientists studying smell now say they have their vision colleagues beat: The human nose, they say, can distinguish more than a trillion different smells.<p>Yes, trillion with a T.<p>That new figure displaces a much more modest estimate. Thu, 20 Mar 2014 20:28:00 +0000 Richard Harris 30953 at http://kuow.org Never Mind Eyesight, Your Nose Knows Much More Google's Flu Tracker Suffers From Sniffles http://kuow.org/post/googles-flu-tracker-suffers-sniffles If you want to know what's up with the flu at the moment, you have a few choices: You can get the latest information at <a href="https://www.google.org/flutrends/us/#US">Google Flu Trends</a>. Thu, 13 Mar 2014 20:23:00 +0000 Richard Harris 30477 at http://kuow.org Google's Flu Tracker Suffers From Sniffles Ancient DNA Ties Native Americans From Two Continents To Clovis http://kuow.org/post/ancient-dna-ties-native-americans-two-continents-clovis The mysterious Clovis culture, which appeared in North America about 13,000 years ago, appears to be the forerunner of Native Americans throughout the Americas, according to <a href="http://www.nature.com/nature/journal/v506/n7487/full/nature13025.html">a study</a> in <em>Nature</em>. Thu, 13 Feb 2014 08:03:00 +0000 Richard Harris 28704 at http://kuow.org Ancient DNA Ties Native Americans From Two Continents To Clovis Neanderthal Genes Live On In Our Hair And Skin http://kuow.org/post/neanderthal-genes-live-our-hair-and-skin Neanderthals died out long ago, but their genes live on in us. Scientists studying human chromosomes say they've discovered a surprising amount of Neanderthal DNA in our genes. And these aren't just random fragments; they help shape what we look like today, including our hair and skin.<p>These genes crept into our DNA tens of thousands of years ago, during occasional sexual encounters between Neanderthals and human ancestors who lived in Europe at the time. Wed, 29 Jan 2014 20:56:00 +0000 Richard Harris 27869 at http://kuow.org Ancient And Vulnerable: 25 Percent Of Sharks And Rays Risk Extinction http://kuow.org/post/ancient-and-vulnerable-25-percent-sharks-and-rays-risk-extinction There are more than a thousand species of sharks and rays in the world, and nearly a quarter of them are threatened with extinction, according to a new study. Wed, 22 Jan 2014 08:44:00 +0000 Richard Harris 27417 at http://kuow.org Ancient And Vulnerable: 25 Percent Of Sharks And Rays Risk Extinction An Old Tree Doesn't Get Taller, But Bulks Up Like A Bodybuilder http://kuow.org/post/old-tree-doesnt-get-taller-bulks-bodybuilder Like other animals and many living things, we humans grow when we're young and then stop growing once we mature. But trees, it turns out, are an exception to this general rule. In fact, scientists have discovered that trees grow faster the older they get.<p>Once trees reach a certain height, they do stop getting taller. So many foresters figured that tree growth — and girth — also slowed with age.<p>"What we found was the exact opposite," says <a href="http://www.werc.usgs.gov/person.aspx?personid=138">Nate Stephenson</a>, a forest ecologist with the U.S. Thu, 16 Jan 2014 08:27:00 +0000 Richard Harris 27143 at http://kuow.org An Old Tree Doesn't Get Taller, But Bulks Up Like A Bodybuilder Whales, Dolphins Are Collateral Damage In Our Taste For Seafood http://kuow.org/post/whales-dolphins-are-collateral-damage-our-taste-seafood Hundreds of thousands of marine mammals are injured or killed every year by fishermen around the world. And because most seafood in the U.S. is imported, that means our fish isn't as dolphin-friendly as you might expect.<p>Under pressure from conservation groups, federal regulators are preparing to tighten import standards to better protect marine mammals.<p>There was a time, more than 40 years ago, when U.S. fishermen killed millions of dolphins while fishing for tuna. Tue, 07 Jan 2014 21:00:00 +0000 Richard Harris 26719 at http://kuow.org Whales, Dolphins Are Collateral Damage In Our Taste For Seafood Arctic Methane Bubbles Not As Foreboding As Once Feared http://kuow.org/post/arctic-methane-bubbles-not-foreboding-once-feared European scientists were alarmed in 2008 when they discovered streams of methane bubbles erupting from the seafloor in Norway's high Arctic. This gas, which contributes to global warming, was apparently coming from methane ice on the seafloor. A follow-up study finds that methane bubble plumes at this location have probably been forming for a few thousand years, so they are not the result of human-induced climate change. But continued warming of ocean water can trigger more methane releases in the Arctic, with potentially serious consequences to the climate. Mon, 06 Jan 2014 21:27:00 +0000 Richard Harris 26613 at http://kuow.org West Coast's Early Warning System For Quakes Still Spotty http://kuow.org/post/west-coasts-early-warning-system-quakes-still-spotty Earthquake scientists on the West Coast would like to build a system that would give people a bit of warning before they get jolted with strong shaking from a distant quake.<p>Seismic waves take time to travel from the epicenter, which means such a warning system could issue alerts ranging from a few seconds to a few minutes. Thu, 26 Dec 2013 23:01:00 +0000 Richard Harris 26132 at http://kuow.org West Coast's Early Warning System For Quakes Still Spotty