An invasion by the northern Pacific seastar is the latest in a litany of troubles plaguing Hobart's Derwent estuary. An international gathering at Cape Grim in Tasmania tests the boundaries of atmospheric chemistry.
Biological control offers no quick solution to the problem of agricultural and environmental weeds.
An update on control programs for eight relentless invaders. Slow change on the range Long-term research is essential to charting the impact of grazing in the rangelands. This software is free and can be installed from Adobe's web site. This site is optimised for Netscape 2.01 or Internet Explorer 2.0. or higher.