Last summer we almost booked a $4,200 all-inclusive in Cancun before my 11-year-old asked whether flying there was terrible for the environment. She wasn’t wrong. We rerouted — Amtrak’s California Zephyr, a working sheep farm in Colorado, two nights at a KOA near Rocky Mountain National Park — and it…

You’ve finally decided to take that trip to Croatia. You found a small, family-run guesthouse instead of a resort chain. You’re packing a single carry-on. You even checked whether the ferry from Split to Hvar runs on LNG. And then you booked the trip for the second week of August…