New systems protect against sediment loss ; Long-term study mixes perennials, annuals ; Survey shows how high prices, environment, other concerns sway consumer views ; Director: A look at the Leopold Center Policy Issue ; Kirschenmann: Redefining Sustainability: 'Greening' to self-renewal ; Center bids farewell to loyal counselor, member of first board ; Adams County grazing project specializes in possibilities ; Guest Column: Leopold Center could spearhead local energy districts ; Two regions receive funds for local food efforts ; Leopold Center becomes focus for research project, for a change ; Environmental scientist joins advisory board ; Book shares voices from local food movement