Read the text and answer the question!

    Birds soon might not be the only ones tweeting in our national parks. Before long, Wi-Fi service may be available in some parks for the first time. Having Wi-Fi would enable park visitors to use their smartphones to connect to the Internet or to text or call their friends. Cell service is extremely limited in many parks, according to the National Park Service. Someone who takes a selfie in a park often has to leave the park before sharing it with friends on sites like Twitter or Instagram. People in favor of adding Wi-Fi say it will help attract younger people to the parks.

    However, some people are concerned that having Wi-Fi will distract visitors from the natural beauty of the parks. David Smith, the superintendent of Joshua Tree National Park in California, thinks that national parks should add Wi-Fi only to some areas, like the visitor centers. He wants visitors to be able to enjoy the scenery without hearing cell phones ringing. "One of the neatest things about visiting a park is the chance to get away from a lot of the distractions that interfere in our normal lives," he says.

The text tells us about ....