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People who unexpectedly lose a loved should be identified early enough and appropriately counselled. Mohammad Ponir Hossain/Reuters.

What can be done to improve treatment for PTSD after a loss

The unexpected death of a loved one is a traumatic experience. It's important to identify high risk individuals to provide counselling and social support.
Tapping into ancient DNA can help us understand ancient humans’ movements and lives. Illustration: Marlize Lombard, Maryna Steyn and Anders Högberg

Ancient DNA increases the genetic time depth of modern humans

Archaeology is not only about stones and bones: it is mainly about the people of the past. DNA is one way to get from the stones and the bones to the people and their stories.
Brazilian President Temer, Russian President Putin, Chinese President Xi Jinping, South Africa’s President Zuma and Indian Prime Minister Modi. Reuters/Kenzaburo Fukuhara

BRICS needs a new approach if it’s going to foster a more equitable global order

The promise of BRICS was that it would usher in a new approach to development. But after meeting annually for the last nine years there's no sign that the old order has been challenged.

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