TO GO WITH STORY: Lifestyle-Art-Sydney, FEATURE, by Madeleine Coorey Photo taken on March 9, 2016 shows Swedish artist Bo Christian Larsson walking through Camperdown Cemetery in Sydney for an installation for the city's 20th Biennale, Australia's largest contemporary arts festival. Swedish artist Bo Christian Larsson had never visited Sydney, let alone seen Camperdown Cemetery, when he agreed to work among its weathered graves, covering them with white covers designed to strip away the hierarchy of the time in which the cemetery -- which dates from 1848 -- was founded. / AFP PHOTO / PETER PARKS / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTIONPETER PARKS/AFP/Getty Images

TO GO WITH STORY: Lifestyle-Art-Sydney, FEATURE, by Madeleine Coorey Photo taken on March 9, 2016 shows art student Eliya Nikki Cohen covering gravestones in Camperdown Cemetery in Sydney with custom made white cloth in an installation for the city's 20th Biennale, Australia's largest contemporary arts festival. Swedish artist Bo Christian Larsson had never visited Sydney, let alone seen Camperdown Cemetery, when he agreed to work among its weathered graves, covering them with white covers designed to strip away the hierarchy of the time in which the cemetery -- which dates from 1848 -- was founded. / AFP PHOTO / PETER PARKS / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTIONPETER PARKS/AFP/Getty Images

TO GO WITH STORY: Lifestyle-Art-Sydney, FEATURE, by Madeleine Coorey Photo taken on March 9, 2016 shows art student Eliya Nikki Cohen covering gravestones in Camperdown Cemetery in Sydney with custom made white cloth in an installation for the city's 20th Biennale, Australia's largest contemporary arts festival. Swedish artist Bo Christian Larsson had never visited Sydney, let alone seen Camperdown Cemetery, when he agreed to work among its weathered graves, covering them with white covers designed to strip away the hierarchy of the time in which the cemetery -- which dates from 1848 -- was founded. / AFP PHOTO / PETER PARKS / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTIONPETER PARKS/AFP/Getty Images

TO GO WITH STORY: Lifestyle-Art-Sydney, FEATURE, by Madeleine Coorey Photo taken on March 9, 2016 shows art student Eliya Nikki Cohen covering gravestones in Camperdown Cemetery in Sydney with custom made white cloth in an installation for the city's 20th Biennale, Australia's largest contemporary arts festival. Swedish artist Bo Christian Larsson had never visited Sydney, let alone seen Camperdown Cemetery, when he agreed to work among its weathered graves, covering them with white covers designed to strip away the hierarchy of the time in which the cemetery -- which dates from 1848 -- was founded. / AFP PHOTO / PETER PARKS / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTIONPETER PARKS/AFP/Getty Images

TO GO WITH STORY: Lifestyle-Art-Sydney, FEATURE, by Madeleine Coorey Photo taken on March 9, 2016 shows art student Eliya Nikki Cohen covering gravestones in Camperdown Cemetery in Sydney with custom made white cloth in an installation for the city's 20th Biennale, Australia's largest contemporary arts festival. Swedish artist Bo Christian Larsson had never visited Sydney, let alone seen Camperdown Cemetery, when he agreed to work among its weathered graves, covering them with white covers designed to strip away the hierarchy of the time in which the cemetery -- which dates from 1848 -- was founded. / AFP PHOTO / PETER PARKS / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTIONPETER PARKS/AFP/Getty Images

TO GO WITH STORY: Lifestyle-Art-Sydney, FEATURE, by Madeleine Coorey Photo taken on March 9, 2016 shows art student Eliya Nikki Cohen covering gravestones in Camperdown Cemetery in Sydney with custom made white cloth in an installation for the city's 20th Biennale, Australia's largest contemporary arts festival. Swedish artist Bo Christian Larsson had never visited Sydney, let alone seen Camperdown Cemetery, when he agreed to work among its weathered graves, covering them with white covers designed to strip away the hierarchy of the time in which the cemetery -- which dates from 1848 -- was founded. / AFP PHOTO / PETER PARKS / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTIONPETER PARKS/AFP/Getty Images

TO GO WITH STORY: Lifestyle-Art-Sydney, FEATURE, by Madeleine Coorey Photo taken on March 9, 2016 shows art student Eliya Nikki Cohen covering gravestones in Camperdown Cemetery in Sydney with custom made white cloth in an installation for the city's 20th Biennale, Australia's largest contemporary arts festival. Swedish artist Bo Christian Larsson had never visited Sydney, let alone seen Camperdown Cemetery, when he agreed to work among its weathered graves, covering them with white covers designed to strip away the hierarchy of the time in which the cemetery -- which dates from 1848 -- was founded. / AFP PHOTO / PETER PARKS / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTIONPETER PARKS/AFP/Getty Images

TOPSHOT - This photo taken on April 9, 2016 shows a cyclist making her way along a street filled with white pollen falling from catkin-bearing trees as the return of pleasant weather marks the arrival of the allergy season in Beijing. / AFP PHOTO / FRED DUFOURFRED DUFOUR/AFP/Getty Images