Preparation Gently squeeze tomatoes to remove juices, then chop. Heat 3 tablespoons oil in heavy large saucepan over medium heat. Add onion and sauté until tender, about 5 minutes. Add garlic and sauté until soft, about 4 minutes. Add dried red pepper and stir 20 seconds. Mix in tomatoes and simmer until sauce thickens, stirring frequently, about 5 minutes. Season with salt and pepper. Stir in half of marjoram and half of parsley. Add clams to sauce. Cover and cook sauce until clams open, about 5 minutes. Meanwhile, cook linguine in large pot of boiling salted water until just tender but still firm to bite. Drain well. Transfer to large bowl. Add remaining 1 tablespoon oil and toss to coat. Pour clams and sauce over, discarding any clams that do not open. Sprinkle with remaining chopped fresh herbs.
Preparation Gently squeeze tomatoes to remove juices, then chop. Heat 3 tablespoons oil in heavy large saucepan over medium heat. Add onion and sauté until tender, about 5 minutes. Add garlic and sauté until soft, about 4 minutes. Add dried red pepper and stir 20 seconds. Mix in tomatoes and simmer until sauce thickens, stirring frequently, about 5 minutes. Season with salt and pepper. Stir in half of marjoram and half of parsley. Add clams to sauce. Cover and cook sauce until clams open, about 5 minutes. Meanwhile, cook linguine in large pot of boiling salted water until just tender but still firm to bite. Drain well. Transfer to large bowl. Add remaining 1 tablespoon oil and toss to coat. Pour clams and sauce over, discarding any clams that do not open. Sprinkle with remaining chopped fresh herbs.