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Editor's choice

Mar 10, 2014

Download your free copy of our special issue "New ways to teach and learn physics", which is packed with the latest techniques, tips and trends in physics education

Features

The lure of G

Jon Cartwright finds out why physicists are still scratching their heads over the value of the gravitational constant, "big G"

NSA keys into quantum computing

Jon Cartwright looks at what progress the US National Security Agency has made in cracking quantum cryptography codes

Technology whose time has come

Joshua Pearce describes how open-source appropriate technology is bringing simple and life-changing devices to people all over the world

Planck perspectives

Peter Coles explains what the data from the Planck mission mean for cosmological theories

Shedding new light on old art

Martin Fischer shows the benefits for the art world of the laser-based technique of pump–probe microscopy

A flame of ambition: Caroline Harper

Sightsavers chief executive and physics graduate Caroline Harper on blinding trachoma, impostor syndrome and how her father’s death spurred her career change

Classically quantum

Jon Cartwright explores a macroscale analogy of quantum mechanics

Can we unify quantum mechanics and gravity?

Sabine Hossenfelder has little doubt that we will be able to

What is time?

Adam Frank explains why the nature of time is such an enduring – and important – problem

Is life on Earth unique?

Ray Jayawardhana explores the possibility of life on other worlds

Can we exploit the weirdness of quantum mechanics?

John Preskill says that harnessing quantum entanglement is key to making quantum computers

What is the nature of the dark universe?

Catherine Heymans takes a look at what we can’t see

Laura Bassi and the city of learning

Paula Findlen examines the life of arguably the first female professional physicist

Redefining temperature

Michael de Podesta reveals how he has measured temperature more accurately than ever before

The reality of open access

Michael Banks looks at how governments are implementing open-access policies