The waters of Puget Sound are a pretty noisy place, if you’re an orca. But what does a passing tanker ship or motorboat sound like to a killer whale? How does it affect their behavior? Ashley Ahearn reports researchers are trying to find out.
Every summer millions of Americans take to the open road and head to National Parks. But some road warriors are louder than others. Motorcycles are one of the largest contributors to noise pollution in the parks. EarthFix's Ashley Ahearn reports.
