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It’s the first of November, which means the latest issue of LAM is here! You’ll find these stories inside:

FOREGROUND

Lighting from the Inside Out (Lighting)
With the rising popularity of outdoor living comes a shining new crop of luminaires.

The Last Ash Standing (Plants)
The emerald ash borer beetle isn’t too fond of boring into the blue ash. If scientists can find out why, they may be able to save more trees.

Timing Is Everything (Construction)
Landscape installation should be driven by weather and nature, not financial models—but climate change is making best planting times unpredictable.

FEATURES

The River Beneath the River
After decades of neglect, the Anacostia River— Washington, D.C.’s lesser-known waterway—is poised at the edge of a hard-won environmental recovery. But where will it flow from there?

Upstream D.C.
Upland from Washington, D.C.’s two rivers, the city is planning major investments
in rain-soaking infrastructure.

Found in Translation
In Seattle, MIG | SvR and Turenscape’s Hing Hay Park provides a place to gather—with a
lively nod toward the Asian Pacific American experience.

All this plus the regular Now and Goods columns. The full table of contents for November can be found here.

As always, you can buy this issue of Landscape Architecture Magazine at more than 700 bookstores, including many university stores and independents, as well as at Barnes & Noble. You can also buy single digital issues for only $5.25 at Zinio or order single copies of the print issue from ASLA. Annual subscriptions for LAM are a thrifty $59 for print and $44.25 for digital. Our subscription page has more information on subscription options.

Keep an eye out here on the blog, on the LAM Facebook page, and on our Twitter feed (@landarchmag), as we’ll be posting November articles as the month rolls out.

Credits: “Found in Translation,” Miranda Estes Photography; “The River Beneath the River,” Krista Schlyer; “Upstream DC,” Rhodeside & Harwell; “The Last Ash Standing,” Christopher Asaro, Virginia Department of Forestry, Bugwood.org; “Lighting from the Inside Out,” Courtesy Rondo; “Timing Is Everything,” Siteworks. 

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BY TIMOTHY A. SCHULER

The coming conflict between two Separate environmental issues.

The coming conflict between two separate environmental issues.

From the July 2015 issue of Landscape Architecture Magazine.

Correction appended March 2, 2015.

People often equate energy efficiency with environmental sensitivity, but a recent trend in LED lighting, namely, the uptick in what’s known as blue-rich white light, has the potential to divorce these goals and put the lighting industry on a collision course with those aiming to design healthful public spaces.

Over the past several years, an increasing number of LED manufacturers are turning to blue-emitting diodes, which are coated with phosphor to produce a clean, white light. Blue LEDs can handle higher-than-average power densities, which greatly increase efficiency. The technology is so revolutionary that the physicists who developed it received the Nobel Prize. But blue LEDs also pose a threat to the welfare of wildlife and human beings.

Light in the blue spectrum (between 460 and 480 nanometers) isn’t bad during the day; in fact, it helps our bodies produce the hormone serotonin. At night, however, it prevents our bodies from producing another hormone, melatonin, which regulates sleep. According to the National Cancer Institute, a lack of melatonin may contribute to breast cancer in women. Blue light also has been shown to disrupt animals’ circadian rhythms, which mimic our own, and cause adverse effects in animal behavior. (more…)

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