Nick spots fibers on the left-hand side of Dr. Sapien's jacket. Catherine goes to take the fibers from the left side, but the close-up shows her taking them from the right-hand side.
Someone cut the grounding pin off Roger Valenti's drill in order to prevent the GFCI from tripping. A GFCI measures the difference in current between the neutral and live wires, not the ground wire. It will work even if the grounding pin is cut.
They mention that angora sweaters are made from goat's wool. Angora wool actually comes from angora rabbits. Cashmere and mohair are types of goat wool.
Gil Grissom claims that terminal velocity is 9.8 meters per seconds square. Anyone who has taken a physics class knows that's actually acceleration due to gravity.
Grissom says Vallenti would've fallen for 5 seconds. That equates to a fall of 400 feet, or 30-40 stories. From the scene of the crime, it's evident that he didn't fall from that height.
While discussing a worker's fall from the roof of a construction site, Grissom states that terminal velocity is 9.8 meters per second squared. That is actually the acceleration of a falling object due to gravity, and since velocity is measured in metres per second, and acceleration in metres per second squared, Grissom must know that what he is saying cannot possibly be correct.
Terminal velocity of a falling human body (a skydiver, say) is about 54 meters per second. To reach terminal velocity, the body must fall almost 600m. By comparison, the Sears Tower is only 442m tall.
Sara mentions that cars are protected from lightning due to the rubber tires. This is incorrect. In reality, people are safe in a car since it creates something known as a Faraday cage. This is a common misconception among laypeople, but Sara is a highly educated scientist and should know better.