An ocean cleanup project in the Pacific has run into some problems cleaning up a floating debris field known as the Great Pacific garbage patch. The 2000-ft. long, U-shaped floating barrier is designed to catch plastic trash in the Pacific ocean, where an enormous garbage patch has collected. The ambitious system is the brainchild of a 17-year-old scientist. The device is not yet working exactly as hoped, but engineers are trying to address the issues that are getting in its way. Listen to hear more about this creative pollution solution and the inventor’s optimistic outlook on its potential to help the environment.
Story Length: 3:09
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October 18, 2018
5:41
When plastic is thrown away, it crumbles into tiny pieces, known as microplastics. These small bits of plastic, less than 5 millimeters (or 0.2 inches) in size, are polluting rivers, lakes, oceans, and even soil. Scientists are studying how microplastics find their way into the ecosystem and what happens when they do. Listen to hear what research ecologists are doing to learn more about how microplastic waste may be affecting us and our world.
Read MoreMarch 24, 2017
2:00
Although the United States has cut its emissions of smog-forming pollutants by half over the past few decades, smog levels in the Western United States have increased each year. Now, scientists believe that rising emissions in Asia are causing smog in the United States. Asian emissions have tripled over the past decades and are particularly high in China and India. During the spring, storms lift and carry emissions from Asia to the Western United States, causing fog. Listen to learn more about how emissions levels in different parts of the world are changing and how global climate systems move emissions around the Earth and then debate: How can we address global pollution?
Read MoreDecember 28, 2015
7:20
The field of bioacoustics, studying the sound of animals, extends far below the surface of oceans. Whale vocalizations can be used as data to track migration and populations. Researchers have found ways to identify which whales are making which sounds. But in oceans, human-made sounds are often louder than other noises, making it hard for marine animals to hear the sounds in their own world. Listen to this story about what can be learned by tracking whale sounds, and how new guidelines are helping whales communicate with each other.
Read MoreAugust 5, 2014
2:58
Lego pieces have been washing up along beaches for nearly two decades after a shipping container slipped its cargo. Now, these Legos that were accidentally dropped into the sea are traveling around the world and turning up in places like Holland and Australia. Listen to this story to learn how that's possible.
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