As we’re told investors are lining up to put funds into co-living developments, how big could this niche be? Or is it simply a stop-gap solution to a broader housing market failure? Airlines have struggled to get back in the air, but now they’re making money - and, like hotels, wondering how to deliver real value to the consumer. And as more companies commit to going green, the space remains a complex one with few absolute metrics, fast changing technology - and a fair dose of greenwash, too.