Biology Videos 

Is Height All In Our Genes?

Dr. Joe Hanson is tall. Most of the people in his family are tall. Does that mean his son will be tall? Turns out the inheritance of height is a lot more complicated than we thought. Scientists know that nature (genes) and nurture (environment) both play a role, but after more than a century of questions, we’re only just now starting to get some answers. In this episode of It’s Okay to Be Smart, learn how the average height of humans changed over time due to agriculture, migration, and industry.…

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GMOs and the Risk to Our Genetic Heritage Biology Environment 

GMOs and the Risk to Our Genetic Heritage

By Alex Taylor In 2001, high in the Sierra Norte de Oaxaca mountains of southern Mexico, UC Berkeley graduate student David Quist hiked along some of the world’s oldest cornfields. Quist was sampling cobs for DNA testing, and what he found kicked off a scientific firestorm and brought attention to a subtle threat to the future of global agriculture. In those ancient Mexican corn varieties, Quist detected the DNA signature of genetically modified organisms (GMOs). A living genetic repository Hike down those Oaxacan mountains and into village marketplaces, and you…

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How Do Big Sharks Beat Cancer? Animals Biology Health Oceanography 

How Do Big Sharks Beat Cancer?

By Kate Stone @GotScienceOrg Wouldn’t it be great to have the power to rapidly heal from injuries or to resist cancer? A human with those coveted abilities might be viewed as the stuff of superhero fantasy. However, there are animals on earth that are known for rapid healing and cancer resistance—sharks. Could we possibly learn how sharks do it and copy them? Scientists from Nova Southeastern University (NSU) have unveiled the results of a new genomics study of shark DNA. The study of great white and great hammerhead shark DNA…

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