Feeling trapped in an office tower? Like you’re watching the short sun-drenched season fly by beyond the double-glazed windows? You don’t need to go all the way to Hong Kong like culture editor Sarah Laing did (page 92) to make the most of the warm weather. (But if you can, hey, all the better.) Studies show that even a short walk in a park can brighten your mood. So cheer up and stride right into summer’s greenest spaces.