A new flame retardant in the air | News Briefs: Assessing the technologies of the future ` A new use for wikis ` U.S. plan requires CO2 emissions cuts ` Stronger federal role for e-waste recycling ` Sub-Saharan Africa goes lead-free ` Getting out in front of nanotechnology | Sustainable agriculture delivers the crops | Canada contemplates curbs on stain repellents | Rain gardens stem urban storm-water flows | Organic vegetables are not pesticide-free