Beyond adding color to a room, paint can actually add to (or subtract from) a room's perceptual size. It also has the power to change the way we see the shape of a room, and even how we feel when we're in it. The secret starts with the colors you select and which walls you choose to paint.

A variety of government organizations and NGOs, including the Government of Canada, have published articles and guidelines for sustaining air quality indoors.

There are many effective steps you can take to significantly improve your indoor environment.

1. Consider installing a recovery ventilator: Many contaminants found in indoor air are generated inside the home. These can be lowered by replacing your...