Boil corn in boiling water for 5 minutes, then remove from heat.

When cool enough to handle, cut corn off the cob. This will yield about 4 cups.

In a large bowl, combine the mayonnaise, Greek yogurt, chili powder, and lime juice. Mix well.

Add the corn, cilantro, scallions, and cotija cheese to the bowl and toss to combine.

Serve with lime wedges on the side.