We'll hear about two new studies about giant, plant-eating dinosaurs that roamed the Earth between 76 and 150 million years ago; Carol Pearson tells us about a new study that looked at people around the world to see if they followed their doctors' advice following a heart-attack; and four mysterious and powerful radio bursts that traveled half-way across the universe were detected by an international team of astronomers - we'll talk with one of the scientists behind the discovery.  This and more are coming up for you on VOA's science, health and technology magazine, "Science World."