As millions of teenagers return to school this month after their winter breaks, Pinterest chief executive Bill Ready argues that there is one thing they shouldn’t bring to class: their cellphones.

Weak sales trends have contributed to a sharp decline in Nike's share price. A turnaround for Nike may take time, especially as competition intensifies from Lululemon, On Holding, and Deckers' Hoka.

This year’s crop of trending colors is borrowed from another kind of “palate.” Pinterest has revealed its annual color palette report, spotlighting a custom color lineup inspired by their ...