Many factors contribute to species extinction. Let’s explore three factors caused in part by human activities.

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Scientists can use 3D tissue cultures to study cancer cells - and learn how to stop them.

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In the beginning, the Zika virus didn’t seem like the next big news story. But time revealed just how dangerous the Zika virus can be.

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Some species have a bigger impact on their ecosystem than others. These keystone species include predators, prey, plants, and ecosystem engineers.

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