Vol. 20 No. 4, July 2007

Index

• Umbrellas.
• Clones.
• Cuba: sustainability pioneer?
• Carbon judgment.
• Costa Rica aims to become first "carbon-neutral" country.
• Portland leads the way in preparing for "peak oil".
• Population projections assume lower fertility, Greater control of HIV.
• Shark overfishing may lead to scallop losses.
• As poaching rises, DNA analysis may be critical for elephant conservation.
• Car-free bonus.
• Climate control.
• Ice cap kaput.
• Trafficking gone wild.
• Chinese air pollution crosses Pacific to Western U.S.
• Europe's first concentrating solar plant to light up Seville.
• Carbon offsets 101: a primer on the hottest--and trickiest--topic in climate change.
• Green tags: making sense of the REC-age.
• Traffic Planet: life in the second carboniferous period.
• A burning issue: palm oil shows promise as a biofuel, but the environmental cost of production can be high.
• Environmental award spotlights grassroots environmentalists.
• Bottom lines.