Can we count on juries?

Towards the end of this week’s Cracked Podcast an important issue was raised: juries are peopled by human beings and human beings are not naturally good at figuring out cause and effect. Over the last few hundred years the sort of evidence juries would have to evaluate were fairly simple; things like “does the glove fit?” (Okay, that’s a bad example.) But now juries are faced with expert witnesses discussing things like DNA evidence which requires a jury capable of interpreting statistical evidence. This is fine if the defendant has the money to hire their own expert witnesses, but for poor defendants they might well get railroaded by the ignorance of the jury. Is there anything that can be done?