We started out with three each of three different types of plants: one member of each set was given water that had been boiled on a gas stove, water that had been boiled in a microwave oven, or water that had not been boiled at all.
Drug patent protection: How long is long enough? A recent Senate committee hearing on Bill S-17, Parliament's effort to comply with international trade rules by extending pharmaceutical patent protection to 20 years, inadvertently opened the door to a broader investigation of the inner workings of the country's pharmaceutical patent legislation.
A patent is a legal document which gives the owner the exclusive right to commercially exploit the invention for the life of the patent (usually 20 years), preventing other inventors and manufacturers from using the same idea. The idea is that the inventor has the right to recoup your investment and profit from it.