It's long been understood that certain sciences are in fact pseudo-sciences and are often referred to as junk science. Commonly, junk science takes the form of sham products designed to prey on people's insecurities. That flashing light you've velcroed to your body is not going to reduce your waist, despite what that scientist on that 2 a.m. infomercial tells you.
However, last week the Wall Street Journal reported that President Obama's advisors on technology and science are about to issue findings calling into question scientific practices accepted by the court system relating to CSI-style forensic evidence.
While the president's advisors' findings are not saying that all forensics are a sham, they are saying that many of the types of accepted forensic evidence do not actually meet the criterion for what should be accepted as evidence in a court of law.