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is a lovely place to explore, where visitors can stroll among the treetops nearly 60 feet above the ground, tunnel through an interactive play area shaped like a plant, or get a close-up view of piranha, poison-dart tree frogs, and baby water dragons.

Malaria causes suffering and death to millions of people worldwide every year, primarily in sub-Saharan Africa. And the major perpetrator is the Anopheles gambiae mosquito, which transmits the malaria-causing Plasmodium parasite to its victims when it takes bloodmeals. But not all A. gambiae mosquitoes do so with equal success or even under the same conditions. This is because this mosquito species is branching out genetically, or speciating, creating new populations with very different characteristics.

By the time a cancerous tumor makes itself known, it has probably lived several lifetimes, developing on a twisted evolutionary path that seems to mock the entire process of cell division and growth. Although there is no dearth of promising research, cancer remains a mute and uncooperative subject. More than 40 years into the nation’s “war on cancer,” much remains unknown.