Statistical analysis of average global temperatures between 1998 and 2013 shows that the slowdown in global warming during this period is consistent with natural variations in temperature, according to research by McGill physics professor Shaun Lovejoy.
The discovery of a split-second burst of radio waves by scientists using the Arecibo radio telescope in Puerto Rico provides important new evidence of mysterious pulses that appear to come from deep in outer space. The finding by an international team of astronomers that includes McGill’s Vicky Kaspi marks the first time that a so-called “fast radio burst” has been detected using an instrument other than the Parkes radio telescope in Australia.
Scientists have shown that a member of the protein family known as SUMO is a key to why tumour cells multiply uncontrollably, especially in the case of glioblastoma, the most common and lethal brain cancer.
Green-chemistry researchers at McGill have discovered a way to use water as a solvent in one of the reactions most widely used to synthesize chemical products and pharmaceuticals. The findings mark a potential milestone in efforts to develop organic reactions in water.
Levels of a small molecule found only in humans and in other primates are lower in the brains of depressed individuals, according to researchers at McGill and the Douglas Institute. This discovery may hold a key to improving treatment options for those who suffer from depression.
“Old rats are tedious to work with,” says Faleh Tamimi, a professor in the School of Dentistry. “They get sick a lot and that means they also cost a lot more. But if you’re interested in aging and diseases like osteoporosis they’re an essential part of the process.” Tamimi is the leader of a McGill team which has just discovered that supplements of melatonin make bones stronger in elderly rats and therefore, potentially, in humans too.
Many people believe that free radicals, the sometimes-toxic molecules produced by our bodies as we process oxygen, are the culprit behind aging. But new research coming out of McGill, suggests that, contrary to popular belief, free radical production increases during aging because free radicals actually combat – not cause – aging.
Neutron stars, the extraordinarily dense stellar bodies created when massive stars collapse, are known to host the strongest magnetic fields in the universe – as much as a billion times more powerful than any man-made electromagnet. But some neutron stars are much more strongly magnetized than others, and this disparity has long puzzled astrophysicists. Now, a study by McGill physicists sheds new light on the expected geometry of the magnetic field in neutron stars. The findings could help scientists measure the mass and radius of these unusual stellar bodies, and thereby gain insights into the physics of matter at extreme densities.
Scientists’ inability to replicate research findings using mice and rats has contributed to mounting concern over the reliability of such studies. Now, an international team of pain researchers led by scientists at McGill may have uncovered one important factor behind this vexing problem: the gender of the experimenters has a big impact on the stress levels of rodents, which are widely used in preclinical studies.
“Not tonight, dear, I have a headache.” Generally speaking, that line is attributed to the wife in a couple, implying that women’s sexual desire is more affected by pain than men’s. Now, researchers from McGill and Concordia University have investigated, possibly for the first time in any species, the direct impact of pain on sexual behaviour in mice. Their study found that pain from inflammation greatly reduced sexual motivation in female mice in heat – but had no such effect on male mice.