Rowan Moore’s best architecture of 2019

From hemp and cork buildings to energy-efficient council housing, the climate crisis got us thinking laterally

• Read the Observer critics’ review of 2019 in full here

Gardens, waterfalls, parks… what is happening to our airports?

From Beijing to Istanbul, exotic new airports are symbols of prestige for strongman leaders. But the environmental cost is massive…

‘It’s a little worn out’: Parisians unveil plan for €250m Champs-Élysées makeover

Plan to restore avenue to former glory will be presented to candidates standing in January’s municipal elections

‘Death of an icon’: the downfall of Barneys New York

What was once New York’s premier fashion store is entering its last days before closing – but luxury lives on elsewhere

The jackets that keep you both warm … and green

Fashion brands focus on their eco-credentials after warnings about polyester fabrics and unethically-sourced down

What Future Performance Wear Can Be: Beyoncé x adidas introduce the first adidas x IVY PARK collection

    Beyoncé has united with adidas, to design a collection that combines fashion and storytelling in an unprecedented way. Complemented by four footwear styles, adidas x IVY PARK reinterprets iconic adidas classics with statement colors and a fresh design approach. Beyoncé x adidas partnership respects Beyoncé’s ownership of IVY PARK, and continues her journey … Read more