Yellowstone Canyon, from Shutterstock
Science Friday airs on WSQX Fridays between 2-4pm. With the National Park Service turning one hundred this week, discussions continue on how to make the parks financially lucrative. More than 300 million tourists visited the national parks in 2015, a five percent increase from the previous year. Of those visitors, more than five million flocked to Grand Canyon National Park alone. With a surge in hikers and bikers come more parking lots and developments.