1 | Using a simple equation, the index gives a measure of how close populations of each of these 'functional groups' are to those in pre-industrial times. | |
2 | Airports are no longer a place of education and fun; they are the most sophisticated of security sites. | |
3 | "These are very sophisticated machines, " he said. | |
4 | I mean, in general, you will want, once you have a set of nice, natural variables, you will want to look mostly at situations where one of the variables changes. | |
5 | And academics are using sophisticated techniques to test whether popular medicines are safe. |