By C. Alex Young | Towson University, Towson, MD, USA

By Stephen Montag | Livingston, NJ

By Lea Proicheva | Gennep, The Netherlands

By Joseph Kwong | Cholla Cactus Garden - Joshua Tree National Park

By Sheryl R Garrison | Lethbridge, AB Canada

By Tina Clothier | Mauna Kea, Hawaii

By Tameem Altameemi | Dubai

By Stephanie Vee | Malta

By Dorota Gasinska | Alameda, California, USA

By Michael Flynn | Pine Mountain Club,California,USA

By Deirdre Horan | Dublin, Ireland

By Hassan Dadashi . Arani | Esfahan. Iran

By Eike Heuser | Maurik, Netherlands

By Jennifer J. Wilhoit | Bainbridge Island, WA USA

By Azem Ramadani | Prizren, Kosovo

By Aurelian Neacsu | Vișina, Dâmbovița, Romania