Even so, in a given plastic, there may be differences in ingredients, visual defects, or impurities that make it difficult to achieve the same molding characteristics, colors, strength and other properties as conventional plastics.

ENGADGET: Fujitsu making laptops from unwanted CDs and DVDs

Stress has also been linked in previous research with premature births and birth defects including visual, hearing and intellectual impairments, as well as complications in the respiratory, gastrointestinal and renal systems.

BBC: Earthquakes 'trigger early births'