"The man with one watch knows what time it is; the man with two is never sure."   --Segal's Law

We recently purchased two indoor air quality meters in the $200-$300 range and find that they never agree, not even close. I would like to find out what other people's experiences have been, and if they have tested affordable models that... Read more

Hello Green Gurus,

Here is the information for August's Peer Networks Webinar, Using a Circular Economy as a Framework for Zero Waste, Zero Energy + Zero Carbon. We hope you will join us!

Register HERE.

Using a Circular Economy as a Framework for Zero Waste, Zero Energy + Zero Carbon
Monday, August 23rd, 2021
... Read more

I came across these open roles recently on Gensler's career page. Sharing them here if there is any interest in this group. As I understand it, though the roles listed are in NYC and NJ, they would be OK if the person reported to one of the following offices: NYC, Morristown, Boston or Toronto.

Sustainability Specialist – NJ: https://... Read more

Hey All,

Those of us in the electrification working group have been talking about the impending release of this new NREL tool, which provides hourly (TOU) GHG emissions forecasts for grid regions around the country. This will be a useful tool in evaluating the impacts of HVAC electrifcation, EV integration, load shifting, storage, etc. I... Read more

Hi all,

We are taking a deep look at green accreditations within our firm. Gone are the days when we could say: "our staff is XX% LEED APs!" as a metric of firm progress. Here are a few questions we are asking ourselves, and I'm wondering how you approach this in your firms:

In a recent e-mail to BuildingGreen subscribers, Paula Melton pointed out that USGBC has opened the call for suggestions for LEED v5.

Every day, I encounter dripping skepticism from building owners about LEED for New Construction, because of the many many times that the fanciful outcomes of energy, water, and daylight models bear little ... Read more

Hi everyone!
I've seen a lot of claims over the years of living walls or planted buffers that can mitigate *outdoor* air pollution and have always assumed there's no real scientific basis for that idea, unless we're talking an actual forest that's 10s of feet thick. Am I wrong? Are there examples of living walls that actually have been... Read more

They say that Louisianans are often late to the party but enjoy catching up.  The state, which had been stuck on ASHRAE 90.1-2007 (commercial) and IECC 2009 (residential) and has just adopted legislation jumping to IECC 2021 / IRC 2021, and commits to automatic upgrades with each 3-year code cycle.  This means we join CA, OR, WA, MA, and VT--... Read more

Welcome to the quiz portion of Choosing Insulation: High-Performance Foundation & Basement Assemblies – Unit 2.

Learning Objectives
Upon completing this course, participants will be able to:


1. Explain the insulating performance and durability of different insulation materials.
2. Provide examples of... Read more

Nancy Eve Cohen is the managing editor at BuildingGreen. She brings the highest standards to her work, with the goal of providing trusted and accurate information and analysis for BuildingGreen’s readers.

Previously she worked in public radio as a reporter and editor for more than two decades, where she specialized in environmental... Read more

You’ve probably heard that wood products are carbon neutral. You might also have heard that timber harvesting causes immense carbon emissions.

Which is it?

Could it be both?

Hi folks,

No details have been sorted out yet, but I wanted everyone to have a heads-up that the SCL Steering Group is proposing that we graduate to a full, stand-alone SCL Summit in 2020. (Until now we’ve been squeezing our Summit into the day before Greenbuild, which is good in some ways, but problematic in others—and limits our time... Read more

This just in from Berkeley Earth. The definitive report on 2023 global temperatures. Lots of incredible graphs to peruse but the news is pretty incredible. Actual temperatures far surpassed predictions. "At the start of 2023, we foresaw only a 14% chance that 2023 would become a record warm year, and only a ~1% chance that 2023 would reach 1.5... Read more

Indoor pollutants can cause health problems and disrupt HVAC system functioning.

BuildingGreen-Approved Filtration

BuildingGreen approves a variety of equipment, filters, and pre-filters that remove particulates and contaminants, minimize pressure drop, or reduce pollution from operations. Products include:

As if you weren't worrying enough already, here's a little something that I ran across through monitoring activity on the American Society of Healthcare Engineers discussion boards:  https://www.id-hub.com/2018/10/17/hospital-plumbing-reservoir-resistance-interview-amy-mathers/, "Hospital Plumbing as a Reservoir for Resistance".  This is both a... Read more