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For the first time, evidence of the zebra chip pathogen has been found in potato fields in southern Alberta, but the University of Lethbridge’s Dr. Dan Johnson cautions against panic.

“So far, the zebra chip pathogen has appeared in only small numbers of potato psyllids,” says Johnson, a biogeography professor and coordinator of the Canadian Potato Psyllid and Zebra Chip Monitoring Network. “The number of potato psyllids in all Alberta sites is very low and many sample cards have found no evidence of the potato psyllid insect. Zebra chip does not normally become a problem unless the potato psyllids are found in much higher numbers than are currently being found in Canada.”

Rising sea levels and human activities are fast creating a "worst case scenario" for Native Americans of the Mississippi Delta who stand to lose not just their homes, but their irreplaceable heritage, to climate change.

Wrap your mind around this: Neutron stars, the collapsed cores of once-large stars, are thought to be so dense that a teaspoon of one would weigh more than Mount Everest.

These are the kind of amazing astrophysical features that help fuel the research interests of Professor John Bally of the Department of Astrophysical and Planetary Sciences, who studies the formation of stars and planets (including luminous, transient objects in space).

Delivering news about end-of-life issues is one of the most difficult tasks clinicians encounter in medical practice. Researchers from the Texas Medical Center on behalf of the ETHICS study investigators, in Houston, Texas, aimed to assess how prepared health-care providers feel in communicating end-of-life issues and determining if proper training had been given to health-care providers.

A new species of bird from the heart of Peru remained undetected for years until researchers identified it by its unique song.