Environmental Protection

Watched by Wild Animals

The Rocky Mountain Wonderland

Bears I Have Met—and Others

The Silent Places

Edible Insects

Roof and Meadow

Vanishing Rivers

Ocean Renewable Energy

City Farm

Volcanic Islands

Microplastic Exposure Sources

Plastic Waste Solutions

Energy Technology

Septic System Failure

The New 50 Simple Things Kids Can Do to Save the Earth

I Walked in Arden

The Crest of the Continent: A Summer's Ramble in the Rocky Mountains and Beyond

In the Open: Intimate Studies and Appreciations of Nature

Canadian Wilds

Cruise of the Revenue-Steamer Corwin in Alaska and the N.W. Arctic Ocean in 1881: Botanical Notes