Here’s how to restore your long-dead Duolingo streak

Duolingo just released one of its most requested features ever—but it’ll only be available for a single month. The feature gives anyone who had previously built a streak of more than 30 days, but then lost that streak by missing too many lessons, the chance to earn it back. That means anyone who skipped their French instruction for their wedding, on an international vacation, or while in labor will finally be able to stop lamenting their lost language learning glory to their friends. The even...