Goldenrod, Himalayan balsam, Chinese windmill palm: three plants, one problem. All are native to continents other than Europe, but were introduced to Switzerland as garden or ornamental plants. At some point they "escaped" into the wild, where they now threaten the native flora.

This phenomenon isn't limited to Switzerland: biological invasions happen on every continent every day. A major driver of this is global trade, which is increasingly shifting to the internet and being conducted on auction platforms like eBay. As a result, one click is all it takes to spread potentially invasive plants from continent to continent - and unintentionally encouraging biological invasions.

Monitoring online auctions

More than half (53 percent) of U.S. consumers want to know what’s in their DNA, according to a new survey, yet only 7 percent of respondents say that their doctor has discussed genetic screening with them.

The nationwide survey, conducted by marketing research company ORC International among a representative sample of 1,020 adults, explored knowledge of and attitudes toward genetic testing among adult consumers. The strong interest in genetic screening that is evident from the survey can be attributed to a variety of factors, but may point to an interest among consumers in using genetic screening to be more proactive about their healthcare.

When cells from the connective tissue collide, they repel one another - this phenomenon was discovered more than 50 years ago. It is only now, however, that researchers at the University of Basel have discovered the molecular basis for this process, as they report in the journal Developmental Cell. Their findings could have important implications for cancer research.

Fibroblasts are motile constituents of the connective tissue and also regulate its stiffness. Moreover, fibroblasts play an important role in malignant skin diseases such as melanoma. In research, they serve as a model system for studying cell migration.

Signaling pathway identified

Strategic voting is an important factor in Canadian electoral campaigns. "People vote strategically when they think neither their first nor their second choice has any chance of winning in their electorate. They vote for their third choice party in the hopes of blocking an outcome that would be even worse," said Jean-François Daoust, a researcher at the University of Montreal's Department of Political Science who studied the phenomenon as part of his doctoral work. He was directed by André Blais, who holds the university's Research Chair for Electoral Studies, and his findings, which drew on Quebec's 2012 provincial elections, were recently published in Politiques et sociétés.