Editor's note

Months after a 2018 peace agreement between the two main protagonists, South Sudan’s entire peace process remains stalled. Matthew Hauenstein and Madhav Joshi explain why the failure to create a unified army and to settle internal borders, have dimmed the prospect of peace. Moreover, despite international pressure, President Salva Kiir and opposition kingpin Riek Machar have been reluctant to meet in person.

And Sam Halvorsen looks ahead to Argentina’s general election on October 27.

Julie Masiga

Peace + Security Editor

Top Stories

Is it time for South Sudanese President Salva Kiir (right) and former vice-president Riek Machar to meet face to face? Philiop Dhil/EPA

Why South Sudan’s peace process is stalled one year on

Matthew Hauenstein, University of Notre Dame; Madhav Joshi, University of Notre Dame

South Sudan has been in the business of building peace for years but is no closer to implementing the roadmap to peace than when it drafted the first agreement.

Alberto Fernández: surprise frontrunner. Juan Ignacio Roncoroni/EPA

Alberto Fernández – who is the frontrunner for Argentina’s presidency?

Sam Halvorsen, Queen Mary University of London

The leader of the centre-left Frente de Todos alliance won a surprise victory in primary elections in August.

Energy + Environment

Fossil fuel drilling could be contributing to climate change by heating Earth from within

Rizwan Nawaz, University of Leeds; Adel Sharif, University of Surrey

Fossil fuels are heating the atmosphere – but the fact that we're burning them may not be the only reason.

Before Trump eyed Greenland: Here’s what happened last time the US bought a large chunk of the Arctic

William L. Iggiagruk Hensley, University of Alaska Anchorage

In 1867, the US bought Alaska from Tsar Alexander II for a tidy sum of $7.2 million. Trump probably wouldn't be able to get that kind of bargain for Greenland.

‘Nuclear-powered’ missile accident in Russia – what really happened?

Claire Corkhill, University of Sheffield

Russia appears to have developed a revolutionary mini-reactor able to power a missile.

Bees: how important are they and what would happen if they went extinct?

Philip Donkersley, Lancaster University

It's unlikely that all species of bees will go extinct anytime soon – but current losses could still have a terrible impact on food supplies and ecosystems.

Science + Technology

Stem cells could regenerate organs – but only if the body won’t reject them

Tobias Deuse, University of California, San Francisco

The idea behind regenerative medicine is that the patient is both the donor and recipient of healthy tissue grown from stem cells. But sometimes the transplanted cells are rejected. Now we know why.

Silicon Valley wants to read your mind – here’s why you should be worried

Garfield Benjamin, Solent University

Facebook and Neuralink are developing interfaces to link our brains to computers, with serious ethical issues.

Health + Medicine

Global health still mimics colonial ways: here’s how to break the pattern

Madhukar Pai, McGill University

High-income country experts and institutions are valued more than expertise in low- and middle-income countries.

Why South Africa’s plans for universal healthcare are pie in the sky

Alex van den Heever, University of the Witwatersrand

South Africa's planned NHI has no equivalent in any setting in the world. It's deeply flawed on a number of fronts.