Topic: Earth and Space Science

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Current Event February 21, 2016

Space Waves

Earth and Space Science Sound

Scientists recently announced a huge discovery—gravitational waves. The waves were detected when a collision of two black holes created ripples or waves, similar to ripples on a pond. These ripples were predicted by Albert Einstein a century ago as a part of his theory of relativity. Scientists have been working to detect these waves for decades and are excited about the information that can be learned from them. In this story you will hear what gravitational waves sound like and learn more about their discovery.

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Current Event January 7, 2016

Artistic Time Capsule in Space

Earth and Space Science Arts

The MoonArk is a time capsule that will be sent to the moon on a privately-funded Moon mission. It is filled with items that will attempt to communicate to whomever finds it and show a portrait of humanity. Two hundred artists and designers contributed to the capsule and the items are unique, including a spritz of perfume, sculptures so small you need a microscope to see them and text messages. Listen to hear more about this artistic time capsule.

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Current Event December 31, 2015

Walking in Space

Earth and Space Science Elementary Atmosphere

There are only a small number of people who have been in space. A smaller number of people have been outside a space station, tied only with a tether, floating in space. There is a huge amount of training and planning that goes into a space mission, but sometimes things still go wrong. Now astronauts have fewer opportunities for space travel since NASA ended its shuttle program in 2011. Listen to these astronauts as they describe their experiences floating over the Earth.

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Current Event December 9, 2015

Oklahoma Earthquakes

Earth and Space Science Environment

Oklahoma has experienced more than 5,000 earthquakes this year. Some scientists tie these earthquakes to fracking, the extraction of oil and gas from deep within the earth. Fracking uses water to extract the oil and gas and is then injected into underground wells for storage. This can put pressure on faults and cause them to slip and trigger an earthquake. After inspections were ordered, state regulators shut down the water disposal wells, which slowed the earthquakes. But once the wells came back online the earthquakes started again. Listen to hear more about how oil is related to earthquakes in Oklahoma.

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Current Event November 10, 2015

An Astronaut's Story

Earth and Space Science Civil RIghts Space Systems

This story is about astronaut Ronald McNair, as told by his brother Carl. They grew up in racially-segregated South Carolina. Carl tells about when Ron came up against segregation laws that he didn’t understand as a child and how that shaped his life as a young African-American in the rural south. But his life ended tragically. Listen to this story of Ronald McNair’s journey.

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Science High School

Two Kinds of Earthquakes

Earth and Space Science Physical Science

One of the biggest earthquakes ever recorded struck recently, with minimal damage, no tsunami and it barely made the news. That’s because there are two kinds of earthquakes. This earthquake happened when two tectonic plates moved past each other horizontally, while more damaging earthquakes are caused when one plate slips beneath another. This radio story explains the two types of earthquakes and how they are gradually redefining the boundaries of the tectonic plates.

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Mars hubble

Current Event October 8, 2015

Water on Mars

Earth and Space Science Space Systems

NASA's Mars Reconnaissance Orbiter shows dark streaks flowing down Martian slopes. When the streaks are widest, there is evidence of water molecules. When the streaks shrink in the cold, water disappears. The water is not the same as a stream on Earth, but more like a hint of wetness. Although scientists are not entirely sure where the water source is, they say it could be from a salty underground reservoir or soaking up moisture from the atmosphere. Listen to hear how water can be important for future explorations on Mars.

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Current Event September 4, 2015

Katrina 10 Years Later

Earth and Space Science Weather and Climate

It’s been 10 years since Hurricane Katrina flooded New Orleans. At the time, President George W. Bush and his administration were widely criticized for their slow response to the flooding. But on the 10 year anniversary, Bush was invited back to visit the city again. His tour sparked mixed reactions from residents who still feel they were let down by the federal government's response to the massive disaster.

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Current Event August 19, 2015

The History of a Former Slave

Earth and Space Science Race Geology Slavery

Historically slaves in the United States are depicted as uneducated farm hands on plantations in the South. But that wasn’t true for all slaves. One famous slave named Yarrow Mamout was an educated Muslim who earned his freedom and even had his portrait painted by a famous American painter. He was a entrepreneur, money-lender and stock-owner, as well as having a reputation for being honest and moral. Archaeologists are trying to find out more about Yarrow Mamout by excavating a plot of land in Georgetown where he owned a home from 1796 until his death in 1823. Listen to this story to learn why this former slave is so well-known and respected.

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Current Event August 12, 2015

Raining Nitrogen

Civics/Government Earth and Space Science Environment

Levels of nitrogen in the soil and water in Rocky Mountain National Park have been on the rise over the last few decades. Dairy farming in the state has contributed to this rise in nitrogen but dairy farmers are working be part of the solution. Technology is helping to warn farmers about wind shifts that would bring nitrogen into the park. Listen to learn more about this source of nitrogen and how self regulation might help the problem.

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Current Event June 4, 2015

State versus Towns Over Fracking

Civics/Government Earth and Space Science Environment

The practice of fracking, extracting gas from deep inside the earth, has divided neighbors and split towns. And now it’s pitting cities and towns in Texas against the state of Texas. The Texas state legislature has passed a law that takes the power to regulate the gas industry away from the cities and towns directly impacted by fracking. As you'll hear in this public radio story, blocking these local efforts to control fracking has sparked a fierce debate.

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Current Event June 2, 2015

Oil Spill Puts Focus on Safety

Civics/Government Earth and Space Science Environment

On Tuesday, May 19, 2015, an oil pipe in Santa Barbara California burst, spilling more than 100,000 gallons of oil into a storm drain that emptied into the ocean. The oil has devastated the coastline. From plants and animals on shore to the bottom of the ocean, this spill is expected to have a lasting impact on this ecologically diverse coast. Listen to learn more about the spill, its environmental impact and the political response it has inspired.

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Current Event May 22, 2015

A Dramatic Climate Change Discovery

Earth and Space Science Climate Change

Greenhouse gas emissions in March were some of the highest ever recorded on the planet in millions of years. Carbon dioxide emissions have built up over time and increased the saturation of carbon dioxide in the atmosphere up to 400 parts per million. Listen to learn about how scientists are able to determine past levels of carbon dioxide and measure this current trend.

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Current Event May 3, 2015

Nepal Earthquake Recovery is Slow

Civics/Government Earth and Space Science Geography

Nepal, the mountainous South Asian country nestled between China and India, is small but densely populated. On April 25th a large earthquake devastated the country. From the capital city of Kathmandu to the highest mountain on Earth, Mount Everest, every corner of the country has been affected. With the death toll rising above 6,000 the international community and aid groups have sprung into action, sending supplies and people to support recovery. Unfortunately, the limited infrastructure in this developing nation is making the relief effort difficult.

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Current Event April 22, 2015

The Epoch of Humans

Earth and Space Science Human Impacts Geology Human origins

When did humans begin to shape the earth? This is the debate happening among geologists who are determining whether the official timeline of the Earth should have a name for the current period of human domination. The concept of the “anthropocene” or the human era first emerged 15 years ago and a working group of scientists is determining whether to adopt it officially and when it should begin. Listen to learn more about the lively debate that surrounds this decision.

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Current Event April 15, 2015

Turning off the Tap, CA Water Restrictions

Civics/Government Earth and Space Science Weather and Climate

The drought in California has continued for another season and will be worsened by a lack of snowfall in the region this winter. With no end in sight, California Governor Jerry Brown announced statewide mandatory water restrictions for the first time in history. Listen to learn more about how these new rules will lower water use through mandated cuts and individual incentives.

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Current Event April 10, 2015

A Scientist's Discovery about the Universe

Earth and Space Science Space Systems

Individuals who make extraordinary contributions to science often begin as regular people with a passion. This was certainly the case for Alan Guth, the physicist responsible for our understanding of how the universe formed after the Big Bang. Guth’s love for physics was sparked in high school and continues to drive his work today as a professor at MIT. Listen to learn more about his journey from a small town in New Jersey to physics textbooks around the world.

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Current Event April 5, 2015

Oil Glut

Economics Earth and Space Science

The United States has become one of the world’s largest producers of oil, surpassing Saudi Arabia. But the US might be running out of space to store all the oil. If companies sell off large amounts of oil to open up storage space, what will happen to the price? Listen to learn more about this debate of supply, demand and cost when it comes to oil production, speculation and storage.

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Beyond our solar system

Science Middle School

Gravity Helps Detect a New Planet in Neighboring Solar System

Earth and Space Science Space Systems

Gravity keeps our feet on the ground, it creates a curve ball, and it can also be used to find new planets. The star at the center of our solar system maintains life on Earth and its gravitational pull creates the orbit of planets. But our sun is just one of many stars in an ever expanding universe. Alpha Centauri is the closest star system to our solar system and new technology is allowing us to better understand our neighbor. Observations of Alpha Centauri date back to 1592, but it wasn’t until 2012 that astronomers in Chile were able to identify a planet orbiting one of the stars in Alpha Centauri because of its gravitational wobble. Listen to learn more about the properties and potential of this new planet.

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Calculating a local carbon footprint

Science High School

Calculating a Local Carbon Footprint

Earth and Space Science Technology Climate Change Engineering Human Impacts

Discussion of Carbon Dioxide (CO2) emissions often occur at the national level. Nations promise to lower emissions and scientists look for alternative energy sources. But new software is providing data for this emission reduction discussion at a local level. The software allows people to have a view into their carbon emissions on the level of a city, neighborhood, block and even household. Listen to learn how scientists and local officials are working together to track and understand emissions at the local level.

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