Concern is growing about the future of several butterfly species on Mt. Charleston, following the Carpenter 1 fire that swept through thousands of acres in July.

One species in question is the Mountain Charleston blue butterfly, which is found only on the mountain. It is one of three species that are now considered endangered.

Life science experts from UNLV are teaming up with the U.S. Forest Service and the U.S. Fish and Wildlife Service to figure out how to sustain those species.

During a panel Wednesday, one expert explained the danger of an event like a wildfire on a species with such a small population, like the butterfly.

"Any catastrophic event that might happen in one part of the habitat might decimate the species. Whereas, that same effect would not be pronounced for a more widespread species," Daniel Thompson, UNLV Life Sciences Professor, said.

The city of Las Vegas wants people to help keep city parks clean and recycle, so it is launching a pilot program at Floyd Lamb Park at Tule Springs.

When people arrive at the park, they will be given a small blue bag for recycling and a small clear bag for trash. When people leave the park, they will be asked to drop off two bags at a designated area.

Park officials hope the Pack In, Pack Out program will get people to think about reducing how much trash they put into a trash bin and how much they can recycle.

The city's recycling program at parks has been able to hit a 50 percent recycling rate or higher.

Floyd Lamb Park at Tule Springs was chosen as a pilot project because visitors must enter and exit through one access point. 

City of Las Vegas officials will join a third-grade class from Kay Carl Elementary School and their principal Dr. Robert Bennett to plant a Raywood ash tree.

The ceremony will starti at 9:30 a.m. Monday, May 20 in Polly Gonzalez Memorial Park in honor of Arbor Day. The park is located next to the school at 5425 Corbett St., at the corner of West El Campo Grande and North Bradley Road.

Laura Eisenberg, a community forester with the Nevada Division of Forestry, will present the city with a Tree City USA flag. This is the 21st year Las Vegas has earned this recognition from the National Arbor Day Foundation because of the city’s program to care for trees.