Sticky times for the maple tree. Its leaves are a riot of colour; its sap produces one of America's favourite delicacies. But the effects of climate change may soon drive the maple tree out of Vermont . [News Source]

Biologists Solve Vitamin Puzzle (Science Daily) Solving a mystery that has puzzled scientists for decades, MIT and Harvard researchers have discovered the final piece of the synthesis pathway of vitamin B12-the only vitamin synthesized exclusively by microorganisms. [News Source]