Cardboard boxes are a desirable recyclable and should be set out for curbside recycling whenever possible. But what happens if Mother Nature has other plans and rains on your cardboard recycling parade? When cardboard boxes get wet, you should not recycle them. When the fibers are saturated with water, it weakens them and reduces the quality of the recyclable. Instead, place wet cardboard in a dry place and let it dry out before returning it outside for recycling.

Manufacturers of printing products continue to innovate over the years. One new technology that has improved printing quality is called nanoprinting, which refers to using tiny particles in toner cartridges that are less than 100 nanometers. The bad news? These microscopic particles can cause health problems for people who work in office environments. According to the Harvard School of Public Health, nanoparticles "are able to reach deep into the lungs when inhaled, potentially causing respiratory and cardiovascular damage." To create a healthier office, place printers in well-ventilated areas away from people. And when running large printing jobs, stay clear of the machine until it's done.

When serving food, avoid plates, bowls and cups that have the look and feel of glass or ceramic but the durability of plastic. According to the Food and Drug Administration, these tabletop items are made with a resin that's a combination of melamine and formaldehyde. There are chemicals in the finished product that can leach onto food -- especially if you microwave food on melamine-based tableware. Choose inert items like ceramic and glass to serve and eat food and drinks instead.