Topic: DNA

Mosquitos

Current Event October 19, 2018

Debate: Should Mosquitoes Be Genetically Modified to Self-Destruct?

Life Science Genetics DNA Cells Biology

Malaria is a devastating disease transmitted by mosquitoes, affecting millions each year. A team of scientists has been experimenting with genetic engineering that would cause the mosquito population carrying malaria to destroy itself. Listen to hear how the genetic engineering process works and how different groups are responding to the controversial experiment, and then debate: Should mosquitoes be genetically modified to self-destruct?

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Science High School

Neanderthal Genes Live in our Hair and Skin

Life Science DNA Human body Human origins

Scientists are beginning to answer questions about whether our physical appearances and behaviors are linked to the DNA of an extinct species of hominid. Unexpectedly large portions of Neanderthal DNA are being found in the genomes of many modern humans. New evidence suggests that inherited Neanderthal DNA can vary dramatically from individual to individual, with some receiving beneficial genes as well as rejecting others. Listen to hear how these new findings are affecting our understanding of human evolution.

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South india monkeys %2898369788%29

Current Event February 23, 2018

Debate: Should We Clone Monkeys?

Life Science DNA

The first mammal to be cloned from an adult cell was a sheep named Dolly in 1997. The Dolly clone proved that cells could be used to create an exact copy of the animal they came from. Since then, scientists have been trying to use the same technique to clone other animals. Dogs, pigs and other animals have been successfully cloned, but the first primate clones were recently born in China. Since monkeys are people’s closest relatives, this may allow scientists to study human diseases and develop cures. Listen to hear about the benefits and concerns of cloning primates and then debate: Should we clone monkeys?

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Science High School

Editing Human Genes

Life Science DNA Cells Biotechnology

We live in an age when genetic engineering has the capacity to affect the course of human evolution. Scientists can edit human DNA, which could have profound benefits for society, but this ability also comes with dangers. Editing human DNA can allow for the treatment and prevention of disease, but this modified DNA can also become a permanent part of human genes, passed down from generation to generation. The scientific community met to discuss these issues. While experts agreed that creating a baby with edited DNA is unsafe, the support continued research to see what is possible. Listen to hear more about this issue and what scientists have concluded.

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Why mammoths got wholly

Science Middle School

Why Woolly Mammoths Have Thick Furry Coats

Animals Genetics DNA

Woolly mammoths were large, elephant-like creatures that lived tens of thousands of years ago, during the last great ice age. The thick, furry coat is one of several traits that gave woolly mammoths an advantage in a very cold environment. Today, the closest biological relative is the Asian elephant, which prefers warmer climates. Scientists were curious about the genetic variations between the woolly mammoth and the Asian elephant, and what might account for the differences between the two species. In this audio story, we hear from a scientist who studied the DNA from the extinct mammoth and compared it to its contemporary descendant. Listen to learn more about what researchers discovered.

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Current Event September 24, 2015

Counting Fish with DNA

Environment Oceans DNA Biotechnology

New technology is revolutionizing underwater science. A brand new field is using DNA testing to study and track species diversity in various ecosystems and environments. Biologists can study one liter of seawater and identify the fish that swam through that water. This allows them to study fish and whales without having seen them and without the expense of divers and equipment. But, there are a few issues with some of the data, such as finding the DNA of food that was eaten miles away. Listen to how data from genetic testing can be used to protect marine life, and how it is changing the research process.

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The cells mystery

Science Middle School

Inventor of Polarizing Microscope Sheds Light on Cell's Mystery

Life Science Engineering Genetics DNA Human body Cells

A new way of looking at live cells is revolutionizing our understanding of how molecular life works. However, it is how how one scientist managed to complete his study despite facing World War II in Japan that makes his discovery so intriguing. By using an old machine gun, Shinya Inoue made a microscope that enabled him to start to see how a cell divides. Listen to learn how Inoue finished his microscope and why it is so important to the science community.

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Genetics

Science Middle School

Microbes are Still a Mystery to Scientists and the Diversity of Life

Life Science Genetics DNA Human body Cells

The study of genes is moving toward a new frontier. There is a new field studying microorganisms which exist in living organisms. Microbes control every process on earth, and a human is made up of 90% bacteria. However, we know very little about these microbes. There is now a newer, more efficient way, to study this bacteria. From this scientists can discover new species and genes. Listen to learn how the study of microorganisms became so important.

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Elysia marginata

Science Middle School

Sea Slug: Animal or Plant?

Life Science Genetics Ecosystems Oceans DNA Ecology

Small green sea slugs puzzle scientists because they can photosynthesize energy, just like plants. These Eastern Emerald Elysia sea slugs also appear to have several different types of DNA. Scientists are hopeful these sea slugs might help them discover more about human DNA and treat human diseases. Listen to learn how these tiny creatures are teaching us more about genetics.

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Using dna to catch poachers

Science Middle School

Using DNA to Catch Poachers

Life Science Animals Engineering Genetics DNA

Game wardens in California are now using DNA fingerprinting analysis to help protect illegal poaching of wildlife. There are many species, from large game to shellfish, which are being illegally caught or killed for food. Since there are so few game wardens to patrol the state, they are relying on forensic evidence to help track poachers. Listen to learn about the latest in DNA fingerprinting technology.

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Wooly mammoths depended on flowers

Current Event February 18, 2014

Woolly Mammoths Depended on Flowers

Life Science biology DNA

50,000 years ago, the arctic was not icy—but grassy, full of life and of course, woolly mammoths. After studying these giant animals’ DNA found in feces and soil, scientists hypothesize their extinction may be due to a flower. Listen to this story to find out why.

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Ancient plague dna found in tooth

Current Event February 5, 2014

Ancient Plague DNA Found in Tooth

Life Science Ancient Civilization DNA

One of the first instances of a plague was found during the Roman Empire. The plague, which occurred during the 6th century, spread through Europe, Africa, and Asia. Today, an ancient burial site may hold DNA evidence of why and how it occurred. Listen to this story to learn the difference between ancient and modern bacteria.

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