Almost everyone on Earth now breathes polluted air…
Air pollution is a growing concern in today’s world, and with almost everyone on Earth now breathing polluted air, should we be concerned about what its doing to our health? … Read More
SolarVenti at Sea!
Hals Barre lighthouse, located about five miles east of Hals in North Jutland, Denmark, was treated to an extensive renovation from 2013 and onwards – both outside and inside.… Read More
New Motor-driven Valve
The new motor valve provides an additional safeguard against hard drafts. The valve closes and opens only when the solar air collector starts (and the valve receives + 5V voltage). … Read More