If you live in a place where you can do it, then try composting your food waste. You can put everything except meat products into the compost pile. Composted coffee grounds and egg shells are really good for your garden, along with vegetable matter.
When it comes to your homes, there are so many "Eco-" products out there now, from carpets and flooring, to paint, glass and siding. Many of these products have come to be to serve the markets of health-conscious consumers, not just Eco-friendly. With asthma prevalent in our children these days, there is a new awareness of what our environmnets can contribute to wellness or illness. There are magazines and books dedicated to the subject. Just do an internet search and you will find a wealth of information. Flooring options have really boomed in recent years! Hardwood is beautiful, but unless it's sustainably managed, it's not always a "Green" choice. Bamboo flooring is good alternative, as bamboo is very fast growing, sustainable, and makes a very durable surface. Cotton/wool/silk/hemp carpets and rugs are available, as well. You can even buy carpets and pads that contain no chemicals. Particularly in the area of home renovation and building, being environmentally concious can have a big impact on your health and that of the planet. There are so many chemicals in building materials and products, it's scary.