There's plenty of science going on on the ISS, here's what they've done in one week: http://www.nasa.gov/mission_pages/statio…
- Completed a long term study on cardiovascular atrophy ( "The information obtained from these experiments has relevance for patients after prolonged confinement to bed rest or chronic reduction in physical activity, as well as for patients with disease processes that alter cardiac stiffness such as congestive heart failure, ischemic heart disease and normal aging." )
- Completed another long-term study into blood vessel wall properties with similar applicability to sick and aging populations.
- Started a project to grow plants in space with close observation
- Did a post op checkout of a flow cytometer. Col Hadfield did a great video on this too, but our modern media cares way more about an astronaut playing the guitar than discussing science, so you don't see this video.
And that's just one week! There's plenty of science going on, but the media doesn't cover it because people generally don't care, and would rather hear about politics, tragedies, and celebrities.