Richard Branson fronts nail-biting campaign against rhino poaching

Adverts featuring the Virgin founder and Chinese celebrities highlight that the keratin found in rhino horn has no more health benefits than chewing your own fingernails

The most unmissable culture of 2016

Tarantino goes bounty-hunting, Botticelli takes you to hell, Bowie goes dark, and Jericho fills that Downton-shaped hole … in our bumper guide to the best 150 arts events to look forward to this year

The beauty of bikes – redesigning two wheels

The bicycle’s technical evolution and symbolic power are soon to be celebrated in Cycle Revolution at London’s Design Museum

A global shift to 100% renewables is not just cleaner – it’s about equality

Communities in Germany, Canada and Uganda are already reaping the benefits of moving away from fossil fuels to more decentralised energy systems

How humans are driving the sixth mass extinction

Scientists have been warning for decades that human actions are pushing life on our shared planet toward mass extinction. Such extinction events have occurred five times in the past, but a bold new paper finds that this time would be fundamentally different. Fortunately, there’s still time to stop it.