Superstar climber Sasha DiGiulian and Ethiopian technologist Kidus Asfaw have one big thing in common: both are entrepreneurs with a focus on sustainability and ethical products. Every day they face the challenge of making money with their green startups, while also helping to solve some of the...

Airports and airlines broke new traffic records in 2023, and pollution from tourism is set to increase massively in the next five years. So what can we do to make aviation–and our own long-distance travels–more sustainable in the near future, reducing air travel’s contribution to global...