Canadian women should start being routinely screened for cervical cancer at a later age than previously recommended and do it less frequently than has been the norm until now, new national guidelines recommend. The guidance suggests cervical cancer screening should begin at age 25 and continue until age 69, at three year intervals. For years, women were advised to get an annual Pap smear, though in recent years a number of countries have lengthened the intervals between tests. Dr.
A report elucidates the widely recognized, but poorly understood, concept of gene-environment interaction, finding a molecular mechanism in the case of post-traumatic stress disorder: demethylation of a glucocorticoid response element in the stress response regulator FKBP5 that depends on both the risk allele and childhood trauma. [Review on epigenetics and childhood trauma by McGill's Moshe Szyf.]
Read more at Nature Neuroscience
The underground aquifers that store more than 90 percent of Earth's liquid freshwater are at risk of being sucked dry. A study published in Nature in August showed that annual demand from the world's 783 large regional aquifers is 3.5 times the amount that is replenished. The impact could be profound: Groundwater sustains nearly 2 billion people and provides almost 40 percent of crop irrigation worldwide. Tom Gleeson, a hydrologist at McGill University, calculated each major aquifer's footprint—the area needed to sustain its use—and compared that with the actual size of the aquifer.
A biodiversity map drawn up by British naturalist Russel Wallace in 1876 depicting how life evolved on our continents has been updated after 136 years. Technological advances and data on more than 20,000 species have allowed a team of 15 international researchers 20 years to map biodiversity in greater detail. The map shows the division of nature into 11 large biogeographic realms and how they relate to each other, the journal Science reports.
Scientists are using video games to tap the collective intelligence of people around the world, while doctors and educators are turning to games to treat and teach. […] “MSA is probably one of the most important tools in bioinformatics today,” says Jérôme Waldispühl, a bioinformatician at McGill University in Montreal, Canada. But the computer algorithms employed to perform MSA don’t guarantee perfect accuracy, so Waldispühl and colleagues created Phylo — an online game that transforms the MSA problem into a simple puzzle that anyone can play.
Let’s start the new year on sound footing by addressing some nutritional falsehoods that circulate widely in cyberspace, locker rooms, supermarkets and health food stores. As a result, millions of people are squandering money on questionable, even hazardous foods and supplements. For starters, when did "chemical" become a dirty word? That’s a question raised by one of Canada’s brightest scientific minds: Joe Schwarcz, director of the Office for Science and Society at McGill University in Montreal. Dr.
(McGill's Dan Levitin): Tom was one of those people we all have in our lives -- someone to go out to lunch with in a large group, but not someone I ever spent time with one-on-one. We had some classes together in college and even worked in the same cognitive psychology lab for a while. But I didn't really know him. Even so, when I heard that he had brain cancer that would kill him in four months, it stopped me cold…
(Chris Barrington-Leigh, economist at McGill University’s Institute for Health and Social Policy): Over the last 25 years, Quebec has gone from by far the least happy province in Canada to one of the most content places on the planet. What happened?
Read more at The Gazette
(Antonia Maioni, Associate professor of political science at McGill University): Most of North America counts down to New Year's through images from Times Square in New York. For most Quebeckers, however, the holiday tradition is an annual Bye-Bye comedy revue. From Bye-bye Jean Charest to Bonjour Charbonneau commission, 2012 served up plenty of political fodder. The new year in Quebec promises to be just as interesting. Here are five things to watch for.
(Desautels' Karl Moore): No regrets, none at all. Over the last couple of years I have read a number of retiring CEOs asked by various newspapers whether they have had any regrets, all that I read said they had no regrets. My initial reaction was to roll my eyes; I found this a bit much because in my career, I have and have had many regrets.
Read more at Forbes