Nature as a model for greener cities

Swapping concrete and asphalt for trees, ponds and green roofs is an example of how cities can be adapted to cope with heavy rain and climate change. But time is running out. For nature-based solutions to have a global impact, ...

Why does polygamy endure in urban environments?

Experts have long believed that in fast-growing, urban environments, polygamy would disappear. In Bamako, Mali, where the population is nearly 3 million and rapidly growing, and economic incentives to polygamy have faded, ...

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