He may no longer be the world’s richest man, but he still has some big ideas about reducing greenhouse gases. Gates’ latest book describes an ambitious, well-thought-out, set of climate actions needed to get to zero by 2050. Building efficiency and electric vehicles are just the “easy” part. Here are highlights from his plan for what must be done and how to make it happen. It's a must read for all who want to help avoid a climate disaster.

Building or renovating a home? One key to success is hiring zero energy experienced construction professionals. Now you can find designers, builders, energy consultants, prefab companies and panel manufacturers that have already built to zero. Check out our new, expanded directory of zero energy construction professionals.

Spray foam is used enthusiastically by many builders hoping to improve energy performance of their projects. But the hidden climate impact of conventional 2-pound, closed- cell foam is actually a huge step backward. A new generation of low global warming potential spray foam corrects this fatal flaw.

Two trends are now converging that will promote a zero energy lifestyle. First, electric vehicle sales are poised to grow dramatically. Second, positive energy homes are growing in popularity. These homes create enough energy to supply all at-home energy use and much of the transportation energy for households. It's time for building professionals to build positive energy homes for homebuyers who will soon be driving and charging electric vehicles.

Home buyers can have a daunting task when looking for a home that is green, healthy and energy efficient. Much of the available real estate sales information ignores vital metrics in these areas. But if you’re looking to buy or sell a home with exceptional environmental and energy efficient features, here is an online tool that will help.

The sixth annual inventory of zero energy homes has just been released. It shows considerable growth to almost 28,000 units. Projections indicate the number could double in 2021.

Brightleaf Homes used zero energy ready homes to break into the Chicago home building market. Building higher value high performance homes was just the beginning. Then they had to make the extra cost work for buyers. Here’s how they do it.

Since before the dawn of civilization, humans have stayed comfortable by harnessing the forces of nature. These principles can also be applied in today’s homes and buildings to reduce or eliminate energy used for conventional air conditioning.

Ted L. Clifton of Zero Energy Plans has been designing and building zero energy homes using structural insulated panels (SIPs) for many years. He shares his thoughts about affordability, building codes, and electrification in this interview.

On new and retrofitted roofs, you can now use aesthetically pleasing solar shingles to keep the weather out and generate renewable energy. They’re more cost-effective than you may think. We compare costs with other roof options and review pros and cons to help you decide if they are right for you.

Zero energy homes need thick layers of insulation, but some materials have serious climate impacts. Identify the key factors that affect the carbon footprint of insulation materials and some good choices for future projects.

Seven times more heat can escape through a window than a wall. There are more choices than ever to balance energy performance with the other important benefits of windows. Choosing windows wisely will help close the gap.