Kilauea Caldera
Halema’uma’u, Hawai’i
Photo: Dave Boyle

Nagerhole National Park
India
Photo: Kalyan Varma

Dublon Island, Chuuk Lagoon
Federated States of Micronesia
Photo: Jennifer Davidson

Gustavus, Alaska
Photo: Sean Neilson

Escalante Creek
Dominguez-Escalante National
Conservation Area, Colorado
Photo: Frank Weston

Caoshan Moonworld
Tainan, Taiwan
Photo: Rich Matheson

Pretty-faced wallaby
Brisbane, Queensland, Australia
Photo: Michael Snedic

Siskiyou Mountains, Oregon
Photo: Emily Mount

Black Bear
Yosemite National Park, California
Photo: Christine White Loberg

Yellowstone National Park
Wyoming
Photo: Rich Kirchner

Bee-eater
Lahore, Pakistan
Photo: Atif Saeed

Forest Park
Portland, Oregon
Photo: Timothy Rains

Matilija poppy
Ojai, California
Photo: Rich Reid

Barksdale Air Force Base
Louisiana
Photo: Jonathan Gunther

South Mesa Trail
Boulder, Colorado
Photo: Lauren Buchholz

Grumeti Reserves
Northern Tanzania
Photo: James Varden

Maungatautari Scenic Reserve
North Island, New Zealand
Photo: Neil Fitzgerald