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High-rise buildings amid shacks in Luanda. President Dos Santo has announced plans to retire amid growing unease among Angolans over deepening poverty despite a recent oil boom. Reuters/Siphiwe Sibeko

Dos Santos maintains the status quo while suggesting change in Angola

Angola's Dos Santos is buying time. His promise to step down is an attempt to diffuse growing political tensions, as repression continues. He might relinquish his position, but not his power.
Silver can be an effective antibacterial when treated in special ways. Silver image via www.shutterstock.com.

Silver shines as antibacterial for medical implants

Joint replacement surgery comes with a big risk of infection. New implant technology that can release silver ions inside the body could help – and without increasing antibiotic resistance.
Ian Burkhart moves his paralysed hand using the thought-controlled Neurobridge brain implant. Ohio State University Wexner Medical Center

Nanotechnology to outer space: ten top tech innovations of 2014

Don’t be mesmerised by cool apps and flashy new gizmos – the top technology inventions of the year are ones that will have a lasting effect. Most are advances in fields that are already changing us. Some…
The floodgates are open, bring on the age of 3D printing. S zillayali

The printed face is just the beginning of a 3D revolution

The news that a man in Wales was able to have his face reconstructed after a serious motorbike accident has brought the wonder of 3D printing to the mainstream. It’s the result of changes in regulation…
A woman drinks using a robotic arm, something she hasn’t been able to do with her own arms for 15 years. Nature

Brain-controlled robotic arm toasts success with a drink

The world of brain-machine interfacing (BMI) has a new posterchild. A study on people with tetraplegia, published in Nature, has shown participants were able to control a robotic arm and hand over a broad…

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