By Geetha Chittoor | Lewisburg, PA, USA

By Laurie Engelhardt | Hermosa Beach, CA

By Ron Andersen | Joshua Tree National Park, California, USA

By Hassan Dadashi . arani | Hamadan province

By Susan Jensen | Odessa, WA

By Abigail Hart | Austin, TX

By Sudhir Sharma | Stormville, NY

By Emily Howard | University of Texas campus, Austin TX

By Cecille Kennedy | Depoe Bay, Oregon

By Mandy Daniels | Fuerteventura

By Steven Bellavia | Surry, Va

By Shaun Tarpley | Lost Maples State Natural Area, near Vanderpool, Texas, USA

By Kevan Hubbard | Middlesbrough, Yorkshire, England

By Andy Dungan | Near Cotopaxi, CO USA

By Makrem Larnaout | Tunisia

By Barry Medlin | Lowndes County, GA