Many people turn to herbal supplements like echinacea to ward off colds or St. John's wort to battle depression, but a recent DNA barcoding study in BMC Medicine indicates that such supplements may not always contain what's on their labels.

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In Science this week: mtDNA analysis give glimpse into decline of Neanderthals in Europe, and more.

The University of Arizona's Raina Maier writes that an understanding of the Earth's microbiome is needed.

The proposed Canadian budget emphasizes partnerships with industry, Nature News reports.

An Australian study of personalized medicine has run into problems as it recruits patients.