Sixty-eight year old cross-country runner Rosie Swale-Pope is interviewed while sitting in her cart, “The Icebird”, in Upperville, Virginia March 13, 2015. Swale-Pope, who is from Great Britain and once ran an unsupported 20,000 mile run around the globe, is currently running across the United States from New York City to San Francisco in support of cancer research. (Photo by Gary Cameron/Reuters)

Supporters of U.S. Democratic presidential nominee Hillary Clinton react at her election night rally in Manhattan, New York, U.S., November 8, 2016. (Photo by Lucas Jackson/Reuters)

Mike Bennett wears a Patriot face mask on his mouth as a preventive measure against the spread of COVID-19 while skateboarding with his dog amid the novel coronavirus pandemic in Huntington Beach, California on April 25, 2020. Orange County is the only county in the area where beaches remain open, lifeguards in Huntington Beach expect tens of thousands of people to flock the beach this weekend due to the heat wave. Lifeguards and law enforcement are patrolling the beach to make sure people are keeping their distance. (Photo by Apu Gomes/AFP Photo)

Corey Jurgensen runs along East Henry Avenue wearing an inflatable unicorn costume. Jurgensen has been wearing the costume during runs several times a week to cheer up others during this time of isolation but finds it therapeutic for herself as well to run through her Seminole Heights neighborhood wearing a silly costume, Thursday, April 16, 2020 in Tampa, Fla. (Photo by Martha Asencio Rhine/Tampa Bay Times via AP Photo)

A dancer from the Trisha Brown Dance Company performs during “Roof Piece” above the High Line park June 9, 2011 in New York City. Roof Piece (1971) consists of nine dancers performing improvised movement signals to each other in a chain on various rooftops overlooking the city. This presentation marked the first full performance of the piece since 1973. (Photo by Mario Tama/Getty Images)

Children play at the Ryoji Ikeda exhibition “the transfinite” at the Park Avenue Armory on June 10, 2011 in New York City. The audio visual installation, which will close after tomorrow, features two back-two-back screens displaying a continual loop of sounds, fragments of numbers and strobe-lit patterns that echo the Japanese artist's interest in mathematics, the subconscious and the digital world. (Photo by Spencer Platt/Getty Images)

View of colourful rock formations at the Zhangye Danxia Landform Geological Park in Gansu Province, China. The Zhangye Danxia Landform Geological Park is 40km from Zhangye city. The park spans more than 400 square kilometers in Gansu. The unusual terrain is the result of red sandstone and mineral deposits carved over the years by natural forces. (Photo by ImagineChina/The Grosby Group)

Winner of the National Park Foundation's photo contest; Honorable Mention: Fan Favorite. Grand Canyon National Park, Arizona. Three friends enjoy sunrise over the Grand Canyon. (Photo by Peter Blanchard)