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Efforts to stop gender-based violence must include men and women. Jenny Berg/Frontline AIDS

What works to stop gender-based violence and what doesn’t

There are a number of effective interventions to prevent gender-based violence among adult women and men at risk of HIV infection. But little is known about the effectiveness of these in young people.
The view of our planet from aboard the International Space Station. Expedition 43/NASA

Curious Kids: What is the Earth made of?

Of all the planets in the solar system, there’s a reason we call Earth home. It’s made of just the right stuff. It’s not too small, or too big, or too hot or too cold. It’s just right.
Green roofs, like this one in Sao Paulo, Brazil, have many benefits. Leonardo Ikeda/Shutterstock

How buildings in Johannesburg could benefit from green roofs

South Africa needs to develop low-cost housing solutions that are inherently comfortable and environmentally sustainable. Green roofs could be part of these solutions.