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Traditional nonprofits help ensure aid gets to ‘hidden’ populations like the homeless. Reuters

Why the world still needs nonprofits

Giving cash directly to the needy is a growing trend, but in most cases it’s not nearly as effective funneling donations through a charity with ‘boots on the ground.’
A metrobus driver performs squats at Rio de los Remedios metrobus station in Mexico. To combat growing obesity, lawmakers have introduced a new campaign encouraging physical activity. Edgard Garrido/Reuters

Fitness versus fatness: which matters more?

For many obese people, the message that physical activity is more important than managing weight is not only unhelpful but also not true.
The warming global climate is causing fundamental changes to the carbon cycle in northern parts of the world. peupleloup/flickr

Will the Arctic shift from a carbon sink to a carbon source?

Global warming is changing the movement of carbon within northern ecosystems to the point where the Arctic could become a net source, rather than sink, of greenhouse gas emissions.
Refugees arrive in Germany. Michael Dalder/Reuters

Do refugees have a ‘right’ to hospitality?

Today’s refugee crisis is not just about the movement of people. It is also about the human immobility that is baked into contemporary laws and politics. What, then, of the code of hospitality?