Self-driving cars are coming, and the technology promises to save lives

Car crashes could be a thing of the past if car makers deliver on their promise to roll out autonomous cars over the next five years. But researchers are still questioning what this accident-free future might look like

What should I wear? Fashion’s biggest questions – according to Google

The search engine recently revealed the 10 style questions it is asked most often. From tying a shirt to walking in heels, our fashion experts answer the internet’s queries

José Mourinho: key reflections on the Special One’s wardrobe

José Mourinho was more than Chelsea’s manager. He was an all-navy hairo, a clothes horse among men. Let’s look back on his style rules

The £30m bookshelf: Pierre Bergé and the greatest stories ever sold

With Impressionists on their walls and priceless books on their shelves, Pierre Bergé and his former partner Yves Saint Laurent were the ultimate collectors. But now the art and YSL have gone, Bergé says it’s time ‘to attend the funeral’ of his library

Museum of Tomorrow: a captivating invitation to imagine a sustainable world

Rio de Janeiro’s new museum, focusing on ideas rather than objects, ecology more than technology, is a little trippy, a little hippy, very worthy but rarely dull

Rowan Moore: the best architecture of 2015

From dumb towers to cool interventions, 2015 saw the gap widen between the big and brainless and the small and thoughtful

Observer critics’ reviews of the year in full