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Features

Your source for incisive, peer-reviewed articles that bring the insight and authority of our panel of experts and authors to bear on the most important ideas for creating a sustainable future.

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My passion for tree kangaroo conservation began in 1996 when I attended a three-week field trip to the far north of Queensland, Australia, with researchers from both Monash and Melbourne Universities. The field trip took place among the homes of the two Australian species of tree kangaroos: the Lumholtz’s Tree Kangaroo (Dendrolagus lumholtzi) and the Bennett’s Tree Kangaroo (Dendrolagus bennettianus). I became interested in tree kangaroos and their conservation and began discussions with mammalologists about possible field trips to New Guinea. I had been inspired by Professor Tim Flannery and Mr. Roger Martin, who had both worked on the Tenkile (Dendrolagus scottae), a species of tree kangaroo in Papua New Guinea. Tim Flannery had given the first scientific descriptions of the Tenkile...

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LakesWater Quality Society and the Restoration of the Rotorua Lakes

A community group, the LakesWater Quality Society (LWQS), successfully initiated action to restore water quality in a major group of lakes in the Rotorua district. This account is written from the perspective of the chair of the Society from 2000 to 2006. It deals with events of those years and briefly touches on the later implementation phase.

Situation

The twelve splendid Rotorua lakes are in the North Island of New Zealand.1 All were formed by volcanic events but vary in characteristics and water quality. Volcanic domes and caldera dominate the landscape. Landforms are mantled by rhyolitic ash eruptions. Rainfall trickles through the soil into pumice aquifers, and some take a...

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More Features

After Decades of Failure… During the second half of the twentieth century, the deforestation of the tropics became a global concern. Young people everywhere learned at an early age that “saving the...
"I will soon go berry-picking and I will take my language with me." So I was told some years ago by Marta Kongaraeva, one of the last fluent speakers of a language of a unique group of people from...
For more than 99.9 percent of the 500,000 years of modern human evolution, the decisions that we have made as individuals and within communities were informed by the direct and intimate feedback we...

In Focus

Environmental security has taken on new meaning in the twenty-first century as sustainability and natural resource...
The pathway for conversion to a renewable energy future has been pioneered by Denmark and a few other visionary nations. But...
If the United States intends to meet the Department of Energy’s goal of producing 20 percent of the nation’s electricity...
I fully agree with the idea that world population growth can—and should—be reversed through fertility rates that fall below...
The Guttmacher Institute provides estimates, covering various years in the last decade, of the proportions of all...