Students of Rabindrabharati University apply colour dust or Gulal on each other during a celebration the festival of colour Holi in Kolkata, Eastern India, 23 March 2024. Holi, also known as the Festival of Colors, is an ancient Hindu festival symbolizing the victory of good over evil and marking the arrival of spring. It is observed with joyful gatherings during which revelers cover each other in colored powders. (Photo by Piyal Adhikary/EPA/EFE)

A group of San Bushmen from the Khomani San community practice their hunter-gatherer craft in the Southern Kalahari desert on October 15, 2009 in the Kalahari, South Africa. One of the largest studies of African genetics by an international team from the University of Pennsylvania, published in April 2009, revealed that the San of Southern Africa are the most genetically diverse on earth, and that the San homeland could be the spot where modern humanity began. (Photo by Dan Kitwood/Getty Images)

Final preperations are made backstage during Graduate Fashion Week at Earls Court on June 6, 2011 in London, England. The event which began in 1991 showcases emerging talent from BA Graduate fashion design courses across the UK and includes exhibition stands and catwalk shows from around 50 universities. (Photo by Dan Kitwood/Getty Images)

Gohei Hayashi of Kyoto University is seen in side his movable eco and healing house, “Kujira (Whale) House” July 21, 2007 in Tokyo, Japan. The house is made from Japanese paper, bamboo and tatami mat. Hayashi has travelled 500 km from Japan's ancient city, Kyoto to Tokyo with his eco house to promote his house which can be placed both out inside and outside to provide a private space. The Kujira house is available at the price of 800,000 yen (roughly US$6600). (Photo by Koichi Kamoshida/Getty Images)

A protester uses his laptop computer in the “Occupy LSX” camp outside St. Paul's Cathedral ahead of a demonstration against higher tuition fees and privatisation in universities on November 9, 2011 in London, England. Around 4000 police officers are on duty and are to be allowed to deploy baton rounds if needed. The march is expected to finish at London Wall in the heart of the capital's financial district. (Photo by Oli Scarff/Getty Images)

Roland Miller is on a mission to document the deserted sites of America’s space race. He has photographed launch pads, bunkhouses and research facilities across the country, some of which no longer exist or are closed to the public on secure military bases. His book, “Abandoned in Place”, is published by the University of New Mexico Press in March. Here: Launch Pad and Gantry with Hermes A-1 Rocket – V2 Launch Complex 33, White Sands missile range, New Mexico in 2006. (Photo by Roland Miller)

Macro or Micro? Scientists’ pictures baffle our sense of scale. It began when Stephen Young, a geography professor at Salem State University in Massachusetts, tricked his biologist colleague Paul Kelly into thinking a satellite image was one of his electron microscope scans. Can you guess whether they are close-up or very far away? (Photo by Paul Kelly)