Read about what other scientists have learned from experiments like ours . The wheel-running data showed us that hamsters have a special brain part that tells them when it is time to run on the wheel each day. We are going to do a new experiment to learn more about how this brain part works. We started our new experiment last night. We can learn some new things about the special brain part if we look at today's activity data.
Scientists like to repeat experiments.
They want to see if the second experiment turns out like the first one. We have some more hamsters living in constant darkness. We can learn two things from today's running data. Read about the hamsters in constant darkness . We are finished with our first set of experiments.