The fix was in for this rhesus macaque drinking juice on the Ganges River in Rishikesh, Uttarakhand, India. No gambling was required to get the reward.
Fotofeeling/Getty Images/Westend61 RM
Friend or foe? A California two-spot octopus (Octopus bimaculoides) gives observers the eye at the Marine Biological Laboratory in Woods Hole, Mass.
Tom Kleindinst/Marine Biological Laboratory
Kenya Wildlife Service (KWS) rangers display ivory seized from poachers around the country. KWS has played a critical role in carrying out operations against poachers.
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A Swiss study tracking the health of a group of children conceived via assisted reproductive technology found that a surprising number developed premature aging of their blood vessels. Now in their teens, 15 percent have hypertension.
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A World Food Programme convoy carries humanitarian aid to Aleppo, Syria. Getting food into conflict zones is a major hurdle — and a topic of discussion at the WFP's Innovation Accelerator.
Cem Genco/Anadolu Agency/Getty Images
Protesters disrupt construction of the Bayou Bridge Pipeline in early September. Trespassing near pipelines is now a felony offense in Louisiana, punishable by up to five years in prison.
A gas flare at a natural gas processing facility near Williston, N.D. The Trump administration wants to ease regulations on methane emissions from energy production on public lands.