Clark Howard talks about how it can pay to invest in solar for your home
Interesting that Clark put solar in his own home, all the while doubting that it would pay off. Combine tax credits, energy savings and now resale value is important in determining whether you make a decision to install solar or not to install solar. According to the study in the article solar can even be profitable.
Modern skylights work with the environment to admit healthful daylight and fresh air, while silently venting stale air
Natural ventilation created by venting skylights is much more effective than opening a window.
–
John Carmody
Director of the Center for Sustainable Building Research at the College of Design at the University of Minnesota
Velux came out with a "No-Leak" skylight in 2010 that takes away all worries about skylights leaking on residential homes. See the linked article concerning designing skylights into your home for light and ventilation.