Katerina Hasapopoulos is not your typical rule-breaker. She's 41, the daughter of immigrants and once a power-lunching marketing director.
Now, she says, "I'm a rebel. I'm a tree sister. I am an Earth protector."
Having children, three little girls, she says, helped her think more seriously about the world they would grow up in. Though Brexit dominates most headlines in the United Kingdom, Hasapopoulos devours stories about how humans are causing climate change.