Voice of America: Some of the most powerful storms on earth are getting stronger, according to new research published this week. VOA’s Art Chimes reports. Jim Elsner of Florida State University and his colleagues based their conclusion on 25 years of satellite data. “If we look over the entire globe, we see that the strongest tropical cyclones are actually getting stronger. And this increase is most notable over the North Atlantic and also the northern Indian Oceans.” The …