Justin Stewart, an ecologist with the Society for the Protection of Underground Networks, collects a sample of soil containing mycorrhizal fungi taken at Saguaro National Park. Credit: Wyatt ...

Told by an old Sagauro cactus, of the many guests which live in its "hotel," from ants to owls nestling in its bark and unlikely co-habitants such as a rattle snake and next door, protected by a ...

Few plant families are as iconic as the resilient, spiky cactus, thriving in the driest deserts and as well as decorating our offices and homes. Their success in both environments comes down to ...