just kind of about that environment for testin medicationg? jason: why does gravity matter?arth, sediment. things experiments might drift to the bottom. without gravity, the particles might be more evenly distributed. also, things move more slowly in space. scientists that are astronauts on the space -- space station actively manage these experiments. what they can do is see him. -- in spacehe way they can pull them out and make it cleaner experiment. it is about early-stage research this, they can do things better. i am writing about small biotech doing safety studies on their drugs. theseabout early -- using extreme environments to modify the early stages in the science. carol: talk to us about his experiments. -- talk to us about these experiments. cynthia: a couple is studying endothelial cells. these cells in a healthy body would normally not be growing. in the case of cancer, they are going to see cancer in the blo od. the wife's hypothesis is that -- endocelial cells don't endothelia cells don't grow in space. she wants to make sure her drug does not impact the health