By Gizaw Legesse | Addis Ababa

By Christopher Hamma | Arroyo Grande, CA, USA

By Fotis Mavroudakis | Kavala, Greece

By Tammy Swarek | El Dorado, Ar

By Tammy Swarek | El Dorado, Ar

By Nina Gorenstein | West Lafayette, IN, USA

By Kerri Jensen | Prescott, Arizona, USA

By David Neeley | The Sustainable City, Dubai UAE

By Joseph Glasper | Port Mayaca, Florida

By Lorraine Boyd | Delmar, NY USA

By FRANK YIN | Chesterfield, MO

By Michael Terhune | Lunenburg MA, USA

By Jonathan Ahern | Calgary, Alberta, Canada

By Karen Cusimano | Raleigh, NC, USA

By Srividya Kadambi | Edogawa ku, Tokyo, Japan

By Wo Wehali | Atlanta, GA