Science is simply what you can do. And doing science makes you a scientist! So,what do scientists do Actually, what matters is not only what they observe in the world around them and what questions they ask, but also how they use evidence or data to answer the questions. They identify useful data and take new measurements.Some of the key issues that scientists face are what calculations they do and how they analyse their data to draw conclusions about the questions they ask. The final issue, which many believe to be the most important, is why they need to communicate their results. This is because they want everyone to benefit from their work! It seems that science is all around us. You see, by doing science, scientists get a better understanding of the world around them and share that understanding with the whole world.