Nothing is known of the cardiovascular function of free-swimming bluefin tuna. We used a surgically-implanted data logger to measure heart rate and visceral temperature of free-swimming and feeding southern bluefin tuna (Thunnus maccoyii; 10-21 kg) within sea pens in Australia.

The Honourable Tony Clement, Minister of Health, and the Honourable John Baird, Minister of the Environment, released preliminary findings for 19 chemical substances identified as high priorities for action under Batch 3 of the Chemicals Management Plan. "The goal of our world-leading Chemicals Management Plan is to protect the health of Canadians from potentially harmful substances," said Minister Clement.

bLoricate choanoflagellates are microscopic, aquatic, filter-feeding Protozoa. The tiny cell is housed within a basket-like cage made of silica ribs. The ribs are produced individually within the cell and stored outside in bundles. When the cell divides, the ribs slide over each other until the exoskeleton is formed. We have developed a computer-graphic model that allows us to re-enact the process of cage assembly.

Global climate change has accelerated the pace of glacial retreat in high latitude and high elevation environments, exposing lands that remain devoid of vegetation for many years. The exposure of "new" soil is particularly apparent at high elevations (5000 m above sea level) in the Peruvian Andes, where extreme environmental conditions hinder plant colonization.

On Friday, August 22, Atomic Energy of Canada Limited informed Natural Resources Minister Gary Lunn that a reactor in the Netherlands that makes isotopes has temporarily shut down due to technical difficulties.