Herbaria's use and importance grows with climate change

There are more than 350,000 species of flowering plants on Earth, yet only 12 of them separate humans from starvation. And, Charles Davis says, 2 out of 5 plant species are likely to go extinct in the near future because ...

How to track important changes in a dynamic network

Networks can represent changing systems, like the spread of an epidemic or the growth of groups in a population of people. But the structure of these networks can change, too, as links appear or vanish over time. To better ...

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