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Migration has been a huge part of human history. Experts agree that early humans started out in Africa and began to migrate out of Africa to different parts of Europe and Asia around 100,000 years ago. This migration occurred in waves but we don’t know why early humans left Africa. Recent research supports the theory that climate change may have been the force that drove early humans out. Looking at things such as dust, buried pollen, and coral, scientists have been able to show a correlation between changes in these things and periods in early human history of migration. As early humans looked for new food sources, the research indicates, they began to relocate. Listen to hear more about what may have caused humans to migrate.
The Roman Empire was one of the largest and longest lasting in history. Theories about what led to its collapse have ranged from the barbarian invasions to internal corruption to economic instability. However, a recent theory that is added to the mix is climate change. New research has contributed to the theory that climate change destabilized Rome and made it vulnerable to collapse. In this audio story, this theory is discussed, including the scientific evidence, specifically the study of tree rings, that supports it. There is also discussion about whether this was naturally occurring or a man-made phenomenon.
American doctors rely on clinical trials to determine which drugs to use in treatment. Researchers have found that clinical trials have not been effective in creating drugs for America’s diverse population. When clinical trials are too homogeneous, they can miss important potential discoveries. Patients who are diverse ethnically and racially can respond differently to medications, leading to dire consequences in some cases. Listen to learn how a lack of diversity in clinical trials affects patients and how researchers are trying to fix it.
There is a debate over whether cloud seeding is an efficient way to produce more snow and rain in places where droughts are the worst. Opponents claim that the chemicals that are sprayed into the air to create more water are toxic and could cause health issues in the future. Others believe this is the only way to for some gas and electric companies to obtain more energy. Listen to learn about the other concerns at hand and if this the history of this process.
Men serving in the U.S. Air Force during the Cold War suffered extreme stress as they prepared daily for nuclear war. But when the Cold War ended, they were not recognized as veterans because they weren’t technically in combat. In this audio story you hear from several Air Force pilots who flew on nuclear training missions who are disappointed they are not treated like other combat veterans. It explores their fight for recognition as veterans by the federal government.
In Brazil today, there are still laws dating back to Portuguese colonization. If you were to buy a home in the Brazilian city of Petropolis, you would make the usual payments, but also something more: a tax or tribute to a local family. These families, the descendants of Portuguese colonial royalty and nobles, legally still own over half the country’s land and charge a “rent” to property owners due to laws left over from 500 years ago. Listen to hear how this system, called enfiteuse (Pronounced: en-fee-TEE-oh-see), affects wealth distribution in Brazil, and what citizens are doing about it.
The eye-popping colors and designs on butterfly wings are not just for show, but are an important adaptation that helps the insects fend off predators. Some butterflies have wings containing toxins, signaling danger to birds and other hungry hunters. Others fold their wings for camouflage or flutter them so the colors confuse birds giving chase. Listen to hear an insect scientist explain more about the amazing ways butterflies’ colorful wings help them survive.
Throughout time, the American dairy industry has been in desperate need of workers and this attracts immigrants from all over the world. This story begins in the home of an immigrant family as they start their workday. Listen to learn about the experiences of new immigrants to the United States, from Guatemala, who work on dairy farms in northern New York and Vermont.
The Communist Revolution in the Soviet Union led to a totalitarian dictatorship that killed or imprisoned tens of millions of people. It was a period of cruelty that has not been forgotten in Russia today. However, some former Communist rulers are still in current-day Russia’s government, which means there’s a complicated relationship with the Soviet past and bringing back some Soviet-era practices. Listen to this story to understand how Russia’s Communist past still plays a role in present-day politics.
Confucius was a philosopher who was born more than 2500 years ago in China, and his ideas have become central to China’s identity. His ideas became Chinese imperial philosophy and they were especially popular during the pivotal Han and Tang and Song Dynasties. Today, China is working to broaden not only its economic and diplomatic power, but also its cultural influence, and is looking back to Confucianism for help. China hopes that extending their soft power will lead to an increase in its ability to export Chinese values as well. But this story finds that Chinese values may not be applicable across all cultures. Listen to hear more about this soft-power powerhouse and how a centuries-old philosopher still leads a nation.
Over the course of American history, debates have raged over the extent of presidential powers. When the founding fathers wrote the Constitution, they intended for there to be limits on what presidents could do without congressional approval or oversight. Nonetheless, presidents from Andrew Jackson and Abraham Lincoln in the 19th century to Franklin Roosevelt and Ronald Reagan in the 20th century exercised an extraordinary amount of power. This story looks at presidential power in the 21st century, focusing on the “war on terror”. Listen to hear to what extent, and for what length of time, presidents should be granted expanded power.
During colonial times, free settlers were not the only arrivals to North America. Enslaved Africans and indentured servants, or people who agreed to work for several years in exchange for paid travel, accompanied their masters. A third, far less known group of servants also came to the colonies. Convicted criminals were punished with either three- or seven-year sentences as unpaid servants in the colonies. Listen to find out who these people were and how they played a role in the United States colonial history.
Giant volcanoes appear every few million years, and their eruptions are rare, but they are deadly. The ash and gas released into the atmosphere have the potential for significant harm. So scientists are studying two new suspected volcanic “hot spots" and are trying to figure out why they erupt. Listen to learn how seismic waves give scientists a picture of the large regions where intense volcanic activity could develop in the distant future.
Until the 1500’s, it was understood that the earth was the center of the universe and that all celestial bodies revolved around it. In his book On the Revolutions of Heavenly Spheres, Nicolaus Copernicus challenged that accepted idea by providing evidence that, in fact, earth, along with the other planets, revolved around the sun. In this audio story, the story of Copernicus and his revolutionary idea is retold. The story delves into how and why Copernicus shared his belief with the world. The story compares the resistance to accepting Copernicus’ belief with modern debates over topics like climate change.
What makes up a coral? This audio story takes you to an underwater observatory where a scientist is studying coral reefs. The scientist has found that CO2 in the ocean is making the ocean warmer and dissolving the coral reef system. But the scientist also discusses how coral reefs can recover. Listen to this story to hear the factors that threaten coral reefs and how they can recover.
Flags represent the shared identity of a group of people, and every country has a flag designed with colors and symbols that are meaningful to its citizens. Flags are often considered symbols of national pride, uniting people with shared heritage, culture, and values. They have also been used historically to help people distinguish friend from foe. Listen to hear how flags can bring people together or keep them apart and how learning about flags can help people understand and respect each other.
When the two towers of the World Trade Center were attacked on September 11, 2001, the towers collapsed on themselves, creating a disaster area known as Ground Zero. A perimeter wall was quickly built around the area to contain the destruction in an effort to rebuild. One journalist spent five months with unrivaled access to the recovery effort and wrote about the experience. Listen to learn more about Ground Zero and how 9/11 changed America.
Art Spiegelman’s “Maus” is a creative and sensitive retelling of one man’s experiences during the Holocaust. As a graphic novel, “Maus” uses comic strips and drawings to help tell its story. The drawing on its cover, however, has been met with controversy in some parts of the world. Featuring a prominent swastika at its center, the cover art has faced objections in places like Russia and Germany. Listen to hear more about how well-intentioned rules around censorship can lead to unintended consequences.
The Vietnam War has a controversial legacy in United States history and culture. The U. S. was immersed in the conflict in Vietnam for 20 years. The draft of young men to fight far from home in the seemingly endless war led to widespread resistance and protest against the war itself. This discontent led to a disrespect of veterans when they returned. Since then the sacrifice of soldiers has been honored in memorials, movies and books. The Vietnam Veterans Memorial was built in 1982 in Washington DC. But it was controversial at the start because it honored soldiers by etching the names of the more than 58,000 soldiers killed in polished black granite. Listen to this radio story to learn the history behind this war memorial.
The Federal Reserve System is the central bank of the United States. It is responsible for the effective operation of the U.S. economy and conducts the nation’s monetary policy, stabilizes prices and moderates interest rates, and promotes the safety of individual financial institutions. In 1907, J. P. Morgan organized other leading financiers to backstop a run on banks and bring an end to a nationwide financial crisis. Later, with the encouragement of a powerful senator, a group of New York bankers went on to develop a plan for a central bank that was eventually adopted and that is still in effect today. Listen to the story to learn more about the formation of the Federal Reserve and America’s central banks by Congress.
After Japan attacked Pearl Harbor in 1941, fear and shock led to the United States' entry into World War II. The U.S. government declared all people of Japanese ancestry enemies, sending more than 120,000 Japanese-Americans to internment camps for almost three years. They were forced to abandon their homes, lives and belongings and move to bare barracks. Listen to this audio story and learn how art was a fundamental way for these internees to cope with fear and bring strength, comfort and beauty to camp life.
For 12 days in October 1962, the world seemed poised on the brink of nuclear war. This public radio story describes President John F. Kennedy’s handling of the Cuban Missile Crisis. It focuses on his role in finding a way to avoid his military advisors’ recommendation that the U.S. launch a military attack on recently discovered Soviet nuclear missiles being built in Cuba. It includes archival sound of his military advisors and the voice of Kennedy as he tells the American people about the crisis. It examines how Kennedy's actions avoided war.
The largest sea invasion in history happened June 6, 1944 during World War II. It was named D-Day, and the Allied forces landed on 5 beaches of Normandy, France to liberate the German-occupied territory. Every year, on June 6th, many countries commemorate this important battle that marked a turning point during World War II. In this audio story, an American soldier discusses his combat experiences on D-Day, the challenges as a soldier in WWII, and the encounters with the terrors of war. Listen to learn more about D-Day as well as how this soldier feels now as he reflects on this historic battle.
Trees can stand up to 100-mile an hour winds during strong hurricanes. Why do some trees survive and others don’t? The answer may be in a mathematical pattern in tree growth—first observed by Leonardo da Vinci. The rule states that smaller tree branches have a precise, mathematical relationship to the branch they came from. A scientist that is studying how air flows around objects is also studying this pattern in tree branches and looking for an explanation. Listen to hear more about these observations about trees and mathematics in nature.
This Public Radio Story describes the great importance of Syria’s ancient cultural heritage sites, for Christians, Jews, Muslims, and people of many other national and ethnic identities. Unfortunately, these sites are under attack as Syria’s civil war rages on.
Millions of people invest billions of dollars in the stock market to make their money grow. Some pool their money with other investors in high risk investment vehicles known as hedge funds. Hedge fund managers employ a variety of strategies with the goal of doing better than the stock market as a whole. The third richest person in the world, Warren Buffett, made a $1 million bet that he could beat the earnings of any hedge fund with his own investments in low-risk index funds. A hedge fund manager took him up on the challenge. Listen to the story to learn who is on his way to winning the bet and why.
Note: At the end of the 10 year time period, Warren Buffett won the bet as the index funds outperformed actively managed hedge funds.
Which animal holds the title of “man’s best friend”? Of course, the answer is the dog. Dogs have lived with humans for thousands of years. Scientists’ understanding of how this came to be has changed in recent years. Additionally, scientists now study dog DNA in the hope of learning more about human DNA. Listen to hear a scientist explain the current understanding of the bond between humans and dogs, and how man’s best friend is helping to uncover mysteries hidden in human DNA.
What is heroism? Explore this question through a discussion with author Conn Iggulden who wrote a book about heroes throughout time. From Florence Nightingale to Harry Houdini, and the passengers of United Airlines Flight 93, the author analyzes the moments and patterns of courage and bravery that make ordinary people heroes.
A new source of energy is being developed by using Michigan's industrial food waste. Using existing technology for converting manure into electricity, these anaerobic digesters are doing their work on pudding packs and canned peaches, among other delicacies. Listen to learn how they are turning waste into electricity.
In 1949, the Communist Revolution under Mao Zedong transformed China from the monarchy it had been for centuries, to a Communist nation. The “People’s Revolution” relied heavily on the passion and vigor of China’s young people, and the Chinese government looked poorly on anyone who was critical of China or the Communist Party. This audio story introduces a man who was only three when Chairman Mao came to power. In his 20’s he worked for the Communists in rural Mongolia. His experiences there formed the basis for his hugely successful 2004 novel “Wolf Totem”, which earned him both praise and criticism in Communist China. Listen to learn more about his experiences in Mongolia, the impact of “Wolf Totem”, and his criticisms, and hopes, for his country.
During the Great Depression and early years of World War II, government-sponsored photographers fanned out across the country to document the struggles of everyday Americans. Originally intended to generate support for New Deal policies, the photographs that were taken, including some by famous names like Dorothea Lange and Walker Evans, have become precious artifacts of the time period. Listen to hear about an effort to organize these unique photos documenting Depression-era life into an easily searchable collection.
When getting knocked around by the ocean waves, a scientist realized the only things that were staying in place were the barnacles and muscles. This is due to the natural glue they produce that scientists are trying mimic to create a power glue that is non-toxic and can be used for things such as medical surgeries. Listen to learn more about how scientists developed these experiments and how this discovery could lead to a very useful resource.
Modern campaigning can get pretty dirty, but politicians today are only taking their cues from politicians in ancient Athens. This public radio story describes how direct democracy was carried out in ancient Athens, a Greek city-state. Listen to learn who was allowed to participate in Athenian politics and how the people of Athens voted for and controled their elected officials.
A tank holding 2 million gallons of molasses burst open and flooded the streets of Boston in 1919. This strange disaster killed 21 people and led to a scapegoating a group of people. An author has written a children’s story about the incident and what happened after the tank exploded. Listen to hear the author talk about this event and what happened in the years afterward.
The novel “Wonder” tells the story of a fifth grade boy with a facial deformity who enrolls in school for the very first time. In this audio story, the author, Raquel Jaramillo (a.k.a., R.J. Palacio) shares the incident that first prompted her to write the novel. She discusses how the boy, Auggie, struggles to feel ordinary in the face of extraordinary reactions. Listen to learn more about this novel and how the choices we make can have a lasting impact.
Many of the characters in books written for children don’t reflect everyone’s background. One girl became frustrated when she couldn’t connect to the characters. In response, she began to gather books about black girls and then give these books to schools. Now that she has exceeded her original goal and collected almost 4,000 books, the girl has started to consider how to impact schools in an even larger way. Listen to hear what actions this girl decided to take to promote diverse books in schools.
Many cities have seen growth in their population, and the high schools in these cities have become a fusion of races and ethnicities. Frisco, Texas has changed dramatically in the last twenty-five years. Not only has it changed from a sleepy railroad town into a bustling suburb of a major city, it has also changed a great deal demographically. A town that was once 75% white is now a mix of people from all over the world. Listen to hear how those demographic changes have affected the lives of students at one of its newest high schools.
For students of Classical Athens, no structure better represents the success of Athenian Democracy than the Parthenon, the great temple built in honor of the goddess Athena. Several centuries ago, Lord Elgin, a British nobleman, removed half the sculptures from the Parthenon and brought them to Britain where they were eventually housed in the British Museum. Now, after years of demanding their return, the Greeks have built a huge, ultramodern museum in the hopes of someday bringing the precious artifacts back. Listen to learn more about this dispute over national treasures and why each side feels it has a rightful claim.
The system we use to organize life is called the Linnean system, named after Swedish botanist Carl Linnaeus. The name of every living thing has a place because of Linnaeus. But now new DNA technology is changing the way to think about the classification system. Scientists are debating whether it is possible to change a system that has been strictly followed for the past few hundred years. Listen to learn how scientists discovered this change in the system.
Much is known about the awful legacy of the transatlantic slave trade and, more broadly, about how European and, later, American perpetrators maintained the slave system. Much less is known, however, about enslaved people and their life experiences. Aside from slave narratives, what is known is scattered among a variety of different sources spanning the history of slavery and the slave trade. A new project has been undertaken to fill this critical knowledge gap. Listen to learn about Enslaved.org, a project that aims to document the lives and stories of enslaved people.