Packages of bacon are displayed on a a shelf for sale at a grocery store in Centreville, Maryland on October 26, 2015. Sausages, ham and other processed meats cause bowel cancer, and red meat 'probably' does too, a UN agency warned Monday, in a potentially heavy blow for the fast-growing livestock industry. A review of 800 studies from around the world found 'sufficient evidence in humans that the consumption of processed meat causes colorectal cancer,' said the International Agency for Research on Cancer (IARC). The finding, it added, supports 'recommendations to limit intake of meat' -- particularly in processed forms. Photo credit: AFP PHOTO / JIM WATSON / Getty Images.
Garden coordinator Spencer Quinn readies a soil bed for planting garlic bulbs at Ryerson's roof top garden at the George Vari Engineering and Computing Center, Toronto, Ontario, October 27, 2015. It's harvest time for Ryerson University's rooftop farm after its first full growing season. Photo credit: Andrew Francis Wallace / Toronto Star via Getty Images.
Greenpeace protestor hang protest banners reading 'Leclerc, Pesticides, It's Offered!', 'Pesticides for all!' and 'Earth contaminated, agriculture in danger' from a Leclerc supply depot in Tournefeuille, near Toulouse, on October 27, 2015. Greenpeace on October 27 launched a new action against pesticide content in low-price Leclerc food products, blocking access to Leclerc trucks at its regional centre in the suburbs of Toulouse, according to a photographer from AFP. Photo credit: ERIC CABANIS / AFP / Getty Images.
Migrants pass farm fields as they are escorted by police towards buses which will take them to Brezice refugee camp on October 26, 2015 in Rigonce, Slovenia. Thousands of migrants marched across the border between Croatia into Slovenia as authorities intensify their efforts to attempt to cope with Europe's largest migration of people since World War II. Photo credit: Jeff J Mitchell / Getty Images.
Firefighters and volunteers ride in a truck as they look for fires to put out amid thick haze in the outskirts of Palangkaraya, a city located in Indonesia's central Kalimantan at the epicentre of the haze crisis smothering Southeast Asia, on October 27, 2015. Thousands of fires caused by slash-and-burn agriculture in Indonesia's forests have forced schools and offices to close and airlines to cancel flights. Indonesia's disaster agency says fires in Kalimantan and Sumatra have left 10 dead, some burned while fighting the blazes and others overcome by pollution. Photo credit: BAY ISMOYO / AFP / Getty Images.
Men harvest marigold flowers in Tarimbaro, Michoacan state, Mexico on October 28, 2015. Marigold flowers are used in Mexico to celebrate the Day of the Dead. Photo credit: ENRIQUE CASTRO / AFP / Getty Images.