solar heat http://knau.org en Earth Notes: Honoring the Sun--Passive Solar Design http://knau.org/post/earth-notes-honoring-sun-passive-solar-design <p>Since time before memory people have used sunlight to make southwestern homes more livable. Many of the region&rsquo;s characteristic cliff dwellings were carefully sited in places that are shaded in summer, but sunny in winter. That allowed natural heating to reduce the need for warming fuels.</p> Wed, 14 Dec 2011 07:00:00 +0000 Peter Frederici 8824 at http://knau.org Earth Notes: Honoring the Sun--Passive Solar Design Earth Notes: Honoring the Sun I: Solar Panels’ Side Benefit http://knau.org/post/earth-notes-honoring-sun-i-solar-panels%E2%80%99-side-benefit <p>This month, as nights grow long, Earth Notes pays homage to the sun and to some of the lesser-known ways it can fuel our lives.</p><p>It&rsquo;s well known that photovoltaic solar panels produce clean, renewable energy. But a new study suggests that they can have an unintended consequence: in some climates, panels mounted on roofs may help keep interiors cool in summer and warm in winter.</p> Wed, 07 Dec 2011 07:00:00 +0000 Richard Mahler 8818 at http://knau.org Earth Notes: Honoring the Sun I: Solar Panels’ Side Benefit