well, it happens after the event. we look at the faultline and for example, if the aftershock is within the distance of the length of that faultline, it is considered an aftershock. if it is farther away than that, they would consider that certainly a separate event. so you can see that there is a lot of activity here, and we still have a very long way to go unfortunately, drew. they can expect more of in. and when you talking about 7.0 or more, you are also start worrying about potentially another tsunami that could happen. 7.0 is the threshold that we look at for potential waves as well. >> 7.0 are huge in their own right. >> yes, they are. >> thank you, jacqui, for that. and boy, if only this were true. a pill to help you lose weight. many of the drugs out there are risky, but there is one pill, one pill that could end up getting the okay from the government ahead. plus, scientists revealing why people have trouble multitasking as they get older. up next the reasons, and find out whether you passed the test we have been giving you all hour, and will you remember the celebrity photos that we have shown you, stay right here.