1 Solar-powered home water heaters cost $1,000-$3,500 (including installation) but have extremely low monthly operating costs and can be used in any climate, according to the US Department of Energy.2  The cost for a solar heating system can vary widely. Prices vary based on building and system configuration, the type of equipment selected and other factors. 2  Generally it costs less to install a system in a new home rather than remodeling an existing one, although it can be practical to install a solar system while replacing the roof.
Spices and herbs at a grocery shop in Goa, India. A spice is a seed, fruit, root, bark, or other plant substance primarily used for flavoring, coloring or preserving food. Spices are distinguished from herbs, which are the leaves, flowers, or stems from plants used for flavoring or as a garnish.
Herbal remedy: A medication prepared from plants, including most of the world's traditional remedies for disease. Most people think of herbal remedies as products sold over the counter as supplements, such as saw palmetto extract or goldenseal ointment. However, many over- the-counter and prescription drugs are based on ingredients originally derived from plants, including aspirin and digoxin. Lab tests have shown that some herbal remedies are indeed effective against illness.