The Northern Lights glow green in a spectacular light show above a field of trees frozen solid with snow. (Photo by Jaak Sarv/Solent News & Photo Agency)

Ivy on a house in North Queensferry, UK begins to turn from green to red as autumn draws nearer on August 26, 2024. (Photo by South West News Service)

A paper rhacophorus arvalis (farmland green tree frog) of Taiwan (R) is surrounded by paper pandas at an exhibition called “Pandas on Tour” at the National Theater in Taipei on February 24, 2014. Some 1,600 paper made pandas are on display, designed by French artist Paulo Grangeon. (Photo by Mandy Cheng/AFP Photo)

Chamrock, an Irish wolfhound, sports a green coat as he waits for the start of the St. Patrick's Day parade on March 17, 2012 in Chicago, Illinois. Tens of thousands took advantage of record high temperatures and sunny weather to attend the city's annual St. Patrick's Day celebration. (Photo by Brian Kersey/Getty Images)

A girl rides a broomstick in front of a green screen at the new Harry Potter Studio Tour at Warner Brothers Leavesden Studios on March 23, 2012 in London, England. The studio, which includes the actual sets and special effects departments where the films were created and shot, goes on public display on March 31, 2012. (Photo by Dan Kitwood/Getty Images)

Detroit Lions cheerleaders perform a routine with the Grinch during a timeout in the action in the second quarter of the Detroit Lions against the Green Bay Packers at Ford Field in Detroit, Michigan on December 5, 2024. (Photo by Lon Horwedel/USA Today Sports)

Well, this is hardly a waist of time! Here’s the couple who traveled the U.S. with an LED hula hoop – taking magnificent landscape photographs as they went. The brilliantly vibrant photographs show off the lights and colors of the lit-up hula hoop – with the strikingly serene American landscapes in the background. Grant Mallory, 25, from Columbus, Ohio, took pictures of his 23-year-old fiance hula-hooping in various national parks across the United States over the course of a three month road trip in the summer of 2015. Here: Magnificent pictures taken by Grant Mallory. (Photo by Grant Mallory/Caters News)

Brain-on-a-chip. Dazzling in green and magenta this image shows the nerve fibres (in green) produced by neural stem cells (in magenta) as they grow on a synthetic gel. Captured by a technique known as confocal microscopy, the image is part of research shedding light on how tinkering with the environment can affect the way in which nerve fibres grow. (Photo by Collin Edington and Iris Lee/Massachusetts Institute of Technology/Wellcome Images)