Overall, radio is a more effective way to outlet information than both television and film. Therefore, we can use it to report the most emergent things, such as the earthquake, and save more life in the shortest time. この表現は自然ですか？

"Overall, radio is a more effective way to disseminate information than both television and film. As such, we can use it to report the most emergent occurrences like an earthquake, and save more life in a shorter time."

I would say it like this. Though "therefore" is actually right to use. I just feel like "As such" is more appropriate, considering the sentence structure. Feel free to use "therefore" though.