Inside these electronics are a wide variety of materials that contain some reusable components like transistors and integrated circuits, but also toxic materials such as mercury, lead, cadmium, and fire-retardant insulation, along with cancer-causing PCBs. The problem is that most of the electronic waste cannot be economically recycled in the first world. The waste is stripped for salvageable components, and the remaining components are shipped to Nigeria, India, and China for inexpensive, labor intensive recycling and disposal. In regards to the environmental issues, the materials such as lead and mercury can leach into the ground water, and the burning components can give off toxic fumes. The exposure to heavy metals are cancer causing and also result in birth defects.
Although there is a large worldwide industry for scrap equipment, it is not well-regulated or located in one specific place. The equipment ends up getting shipped to an overseas recycler where is has already been stripped of all its value, and the obsolete equipment ends up as toxic waste, with hazardous components exposed, burned or allowed to degrade in landfills. The laws of the United States do not connect with those of other countries which is why different corporations can get away with what they are doing without consequences. It is difficult to control the entire world so enforcing international policies on countries is made difficult.
There are many things that can be done about this problem. Right now the Basel convention governs the shipment of hazardous waste to the developing world and the state of California controls the Electronic Waste Recycling Act. Individually, we can cut down the purchase of electronics, and when one is selecting new electronics, it would be wise to chose one that can be upgraded or are modular, also to consider selecting manufacturers who follow the green standards. When a computer breaks, it is a good idea to make sure it is really broken before purchasing a new one because there are many companies that can repair computers or upgrade them for you. If one is purely just sick of the computer they could donate it to a place like the goodwill or even give it to a relative or friend.