Editor's note

Could Chile become the new Saudi Arabia, at the head of some sort of “renewables OPEC”? The idea is not as crazy as it sounds. As the world switches away from fossil fuels, raw materials like lithium (used for batteries) and copper (for generators) will become ever more crucial, and the South American country has the largest reserves of both. Andrew Barron looks at who controls the resources needed to build millions of wind turbines and solar panels.

Starfish might look like uncomplicated creatures but there’s a lot going on beneath their spiny exteriors. Coleen Suckling explains new research that shows starfish species that live deep in the ocean not only have eyes at the end of their arms but can even see in the dark

The fallout from the 2007-08 financial crisis has kept all eyes on the banking industry. Deep-rooted problems in pensions, meanwhile, have been swept under the carpet. Yet public and private pension funds are in serious trouble and it’s time we dealt with the issue head on, writes Ania Zalewska.

You might think parasites are just an issue of personal health, but they are often used as a metric for political and social conditions. In South Korea, the prevalence of parasites such as giant roundworms were considered an embarrassment. Dramatic steps – such as requiring children to bring stool samples to school on a regular basis – were taken.

Will de Freitas

Environment + Energy Editor

Top story

Blue Planet Studio / shutterstock

Meet the new 'renewable superpowers': nations that boss the materials used for wind and solar

Andrew Barron, Swansea University

The fossil fuel era won't last forever. And a new set of countries will find their reserves of lithium, copper and rare earth metals are in high demand.

Shutterstock

Starfish can see in the dark (among other amazing abilities)

Coleen Suckling, Bangor University

Nightvision, ejectable stomachs and regrowable arms mean starfish are more than meets the eye.

Kateryna Kon/Shutterstock.com

Taking poo samples to school was an essential part of South Korea's modernisation

John P DiMoia, Max Planck Institute for the History of Science

Parasites are not only a personal health problem – they are political too.

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