LONDON — Stella McCartney’s summer campaign is for the birds. It’s a call to protect dwindling avian life, and a warning that one day there may be a world where birds live only in fantasy.

Stella McCartney doesn’t want you to feel bad. The British fashion designer understands it’s easy to get overwhelmed by all the ways the products we eat, buy, and wear come with unintended ...

Stella McCartney has long been at the forefront of fashion’s sustainability movement. But despite a flurry of climate commitments from brands in recent years, change has remained slow across the ...