CATALYST

DENVER MUSEUM OF NATURE & SCIENCE ONLINE MAGAZINE

Fall 2025

Welcome to the Fall 2025 issue of Catalyst!

On the cover: A selection of colorful moths from the Denver Museum of Nature & Science's Entomology Collection. The Museum houses a multitude of insects — including a great diversity of moths from around the world — for research purposes.

Collection: Denver Museum of Nature and Science Entomology Collection

In This Edition

The Mystery of the Missing Bison — Solved After 50 Years

This 650-Pound Museum Bison Vanished. Here’s How We Got It Back.
A Refresh for Insects and Butterflies

Our Iconic, Toddler-Fan-Favorite Lady Bug on the First Floor has Gotten a ‘Facelift’
Understanding Nature’s Most Loveable Giants

The Museum Team is Excited to Host ‘The Secret World of Elephants’
6 Marvelous Moths from the Museum’s Entomology Collection

Stunning Moths You Never Knew You Needed to See
Connecting Scientists to the Colorado State Legislature

Premiering the Colorado Science & Technology Policy Program & Fellows

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Laser Shows

Laser Halloween

Laser Stranger Things

Temporary Exhibitions

Brick Planet: A magical journey made with LEGO® bricks

Magical Winter Nights

The Secret World of Elephants

A juvenile T. rex dinosaur plays in a natural setting, showcasing it's youthful energy and curiosity.

Discovering Teen Rex

A reconstruction of the “palm world” – forests were dominated by palms for the first ~300,000 years after the asteroid impact. Here, Loxolophus forages for palm seeds while another unnamed/undescribed mammal crawls down a palm frond. A pond turtle, Hoplochelys, looks on in the distance.

After the Asteroid: Earth's Comeback Story