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Plastic trash less than 5 millimeters long is in the things we eat and drink, and the air we breathe. Scientists are just beginning to study where it comes from and how it might affect our health.

After years of budget and political pressure, some climate scientists are changing the way they describe their research, and avoiding the term "climate change."

PFAS are a family of chemicals accumulating in the soil, rivers, drinking water and the human body. How much exposure to these substances in clothes, firefighting foam and food wrap is too much?

NPR's Ailsa Chang talks with Stan Meiburg, the former acting deputy administrator for the Environmental Protection Agency, about the train derailment that led to a toxic spill in East Palestine, Ohio.

The latest NPR/PBS NewsHour/Marist survey finds the economy is still top of mind for Americans — and that both parties are vulnerable on different issues.

The world's highest concentration of data centers is in Virginia. Many residents are not happy about that.

One of President Biden's most popular infrastructure proposals hearkens back to FDR's New Deal. A Civilian Climate Corps would aim to tackle climate change while caring for public lands.

SIMPLE.Robert talks with Tom Oschenslager,(OSH-EN-SLANHG-ER), is a tax partner the accounting firm Grant Thornton in Washington DC. He spoke to us from his office. 3. LIGHT & LAG. Noah talks with Dr. Charles Czeisler (SIZE-ler), Associate Professor of Medicine at Harvard Medical School, and senior author of a new study on human response to light. The study, published today in the journal Nature, shows that normal levels of indoor light, not just bright light, can reset the human biological clock. Czeisler says that, thanks to Edison, our bodies are in a permanent state of jet lag.

School began in most districts across the country today. Many high schools start at 7:30 AM....but in Minneapolis, high schools have, for the fourth year, begun their day later...at 8:40AM. The dramatic change is the result of years of sleep research on adolescents...which finds they naturally fall asleep later, around 11:30PM. And what's more...they need about nine and a half hours of sleep each night. So without the later start times..teens are perpetually in what researchers call "sleep debt." NPR's Michelle Trudeau reports.

NPR's David Welna reports on the 20th anniversary of the Mariel Boatlift, the massive wave of immigration from Cuba to Florida in 1980. Over a five-month period, 125-thousand Cuban refugees left Cuba from the port of Mariel, and traveled to the United States in small boats. Processing the huge influx overwhelmed the Immigration and Naturalization Service. The INS task was even harder because the refugees included convicted criminals who had been released from prison and mental patients freed from institutions.