You might not entirely appreciate the wonders and majesty of national parks unless you venture out after dark and gaze up at what often is referred to as the other half of the national park system. The view can be quite dazzling, with planets, stars, the Milky Way, and for the lucky, a comet or shooting star.

Sadly, not every park offers such dazzling views. Light pollution reaches more than a few national parks, and can really infringe on your nighttime enjoyment of the parks.

Gavin Heffernan is among those park travelers who are troubled by light pollution. He's a California-based photographer with a unique long-form time lapse style. And he's hoping this approach brings a fresh awareness to the wonders of night skies in the national parks and creates advocacy to fight light pollution and the damage it wreaks on natural habitats.

Warming oceans, pollution, more potent hurricanes, anchor drops, dredging and trawling. The Florida Reef struggles with a lot of impacts today. In fact, only about 2 percent of the reef that stretches some 350 miles from Biscayne National Park past Everglades National Park and down to Dry Tortugas National Park is covered with living coral.

For several months now at the National Parks Traveler we've been building an ongoing series of stories and podcasts focused on impacts to the Florida Reef and whether it can be saved. Today our guest is Dr. Erinn Fuller, an associate vice president for research, senior scientist, and coral health and disease program manager at the Mote Aquarium in Florida.

Dr. Fuller is on the forefront of efforts to offset impacts to the Florida Reef and restore its corals. She'll explain the various impacts to the reef and the work being done to offset them.

Capitol Reef National Park in Utah is one of the Mighty Five, as the state likes to say in its tourism promotions, and while it's somewhat off the beaten path, visitors are finding it.

In 2024, visitation to the park was a record 1.4 million, a number that likely increased in 2025 and will continue to increase for the foreseeable future.

Cognizant of the rising tide of visitation, the National Park Service staff at Capitol Reef has been working on a visitor use management plan intended to better manage growing visitation. Our guest today is Sue Fritzke, a former superintendent of the park and a member of the Coalition to Protect America's National Parks.

What do you do, where do you go, when you pull into your favorite national park and can't find a place to park or a trail without crowds?

Those are good questions probably going through many people's minds as the national parks become more and more popular with more and more people.

Mike Oswald might have the answers you're looking for, at least for the Western half of the country. Oswald is the writer and publisher behind Your Guide to the National Parks, a thick, fact-filled guidebook to the 63 national parks in the country. This year he's veering outside of the parks with a new book titled, simply, Public Land, 1,000 Western Wonders.

Congaree National Park is an often-overlooked unit of the National Park System. Indeed, only about 250,000 visitors set foot in Congaree each year. Those who do are awestruck by the size of the trees there, as the park contains the highest concentration of champion-sized trees anywhere in North America.

Our guest today is Professor Kimberly Meitzen from Texas State University. Before arriving at Texas State, she studied at the University of South Carolina, where she fell in love with Congaree, its floodplain, and its big trees.

A growing majority of bat species are in serious trouble, largely because of white nose syndrome, a deadly fungal disease that resembles a white fuzz on infected bats. As the disease has spread across the country, it's decimated bat populations – killing upwards of 99 percent of some populations – and turned up in many national parks. As part of the National Parks Traveler's Threatened and Endangered Species Project, contributing writer Kim O'Connell has been looking into the situation with bat species.

Big Bend National Park lately has drawn a lot of national attention, and not in a good way. Recently the U.S. Customs and Border Patrol announced that it wanted to build some sort of border wall along all or part of the 118 miles of border the national park shares with Mexico. Is that a good idea? Will it adversely impact the park? Can it even be done?

To discuss those and other questions, our guest today is Bob Krumenaker, whose long Park Service career included a stint as Big Bend's superintendent. Bob also is chair of the Keep Big Bend Wild organization that is pushing to see a large portion of the park designated as official wilderness.

To put some perspective on the National Parks Travelers' monthslong coverage of threatened and endangered species, we're going to go back in time a bit today to replay a podcast in which we discussed the ESA — and possible changes to it — with Jake Li, a vice president with Defenders of Wildlife, and Stephanie Adams, director of wildlife at the National Parks Conservation Association.

At Cumberland Island the National Park Service currently is crafting a visitor use management plan that critics say poses a great threat to the national seashore's official and potential wilderness.

To get an understanding of what's at risk, we've invited Jessica Howell-Edwards, the executive director of Wild Cumberland, which advocates for the seashore's wilderness area and ecosystems, to join us.

The Florida Reef stretches from Biscayne National Park south past Everglades National Park and down to Dry Tortugas National Park in Florida. It's roughly 350 miles long, and is the only coral reef in the continental United States.

When it comes to reefs around the world, the Florida Reef is the third largest. But, unfortunately, it's under a lot of pressure. It's dealing with pollution, ocean warming, damage inflicted by anchors, and disease. Perhaps the most serious disease infecting the reef is Stony Coral Tissue Loss Disease, which can be fatal to corals.

Our guest today is Beth Firchau, who works for the Association of Zoos and Aquariums. Part of her role is to manage the association's safe coral program, and part of her role is AZA's coordinator for the Florida Reef Tract Rescue Program. And part of her work involves a network of aquariums across the United States that are holding samples of corals from the Florida Reef.