Seafood Paella With Spinach And Arugula

Name: Seafood Paella With Spinach And Arugula
Ingredients: 1/4 cup extra-virgin olive oil, preferably Spanish; 1 bunch scallions, white, light-green and dark-green parts, thinly sliced (1 1/2 cups); 4 packed cups baby spinach and arugula (6 ounces); 2 cups Bomba rice (15 ounces); 7 cups low-sodium chicken broth; 1 medium tomato, seeded and diced; 1/2 teaspoon smoked paprika; 1/4 teaspoon saffron threads, crushed and mixed with 1 tablespoon water; Kosher salt and freshly ground pepper; 1 pound peeled and deveined medium shrimp; 1 pound mussels, scrubbed