In the same saucepan, add the brown rice and water. Bring to a boil. Once boiling, add the browned beef, black beans, salsa, undrained diced tomatoes, ground cumin, garlic powder and salt and pepper, to taste. Once boiling together, reduce heat to medium low, cover and cook for 50 minutes, or until rice has cooked through. (NOTE: If you wish to use instant brown rice or white rice, let cook for the time suggested on the packaging.)