“Look deep into nature, and then you will understand everything better.” Albert Einstein

Ecotherapy: Healing with Nature in Mind edited by Linda Buzzell
and Craig Chalquist

Your Brain On Nature: The Science of Nature’s influence on Your Brain
by Eva M. Selhub and Alan C. Logan

The Nature Principle: Reconnecting with Life in a Virtual Age by Richard Louv

Vitamin N: The Essential Guide to a Nature-Rich Life by Richard Louv

The Rebirth of Nature: The Greening of Science and God by Rupert Sheldrake

Are We Smart Enough to Know How Smart Animals Are? by Frans de Waal

The Brilliance of Birds by Jennifer Ackerman

The Hidden Life of Trees: What They Feel, How They Communicate 
by Peter Wohlleben

Blue Mind: How Being Near, In, On, or Under Water Can Make You Happier, Healthier... 
by Wallace J. Nichols and  Céline Cousteau

What a Fish Knows: The Inner Lives of Our Underwater Cousins 
by Jonathan Balcombe

What a Plant Knows: A Field Guide to the Senses by Daniel Chamovitz

The Nature Therapy Pocket Book for Stress Control and Self-Growth
by Laurie Lacey 

Reclaiming the Wild Soul: How Earth’s Landscapes Restore Us to Wholeness 
by Mary Reynolds Thompson and Lorraine Anderson