An image, from a scanning electron micrograph, of Heterorhabditis megidis nematode worms (colored blue). These parasitic worms harbor a bacteria that repels mosquitoes.
Steve Gschmeissner/Science Source
Kamal Hosen and Rahima Khartoum, Rohingya refugees in Bangladesh, hold a photograph of their 14-year-old son, Din Mohammad. A victim of human trafficking, he was eventually rescued from a camp in Thailand.
Shazia Rahman/Getty Images
A resident at the Mother Teresa of Calcutta senior home in Caracas. The people at the home were not reluctant to be photographed, says photojournalist Wil Riera: "They want to share their history, to have a voice."
Students exercise at a weight-loss summer camp in China's Shandong Province. The government promotes physical activity as the solution to a growing obesity problem.
Wang Zhide/VCG via Getty Images
Prime Minister Narendra Modi (center) attends the opening of the 106th Indian Science Congress at Lovely Professional University on last week in Jalandhar, India.
Pardeep Pandit/Hindustan Times via Getty Images
Demonstrators ransacked this Ebola transit center in Beni in the Democratic Republic of Congo, where the struggle to control the disease — and the protests it has sparked — will be part of the global health landscape in 2019.
Alexis Huguet /AFP/Getty Images
Tea made from the wormwood plant. Wormwood tea has been used as a remedy for fever, liver and gall bladder ailments — and now it's being tested for the flatworm infection schistosomiasis.