The reproductive success of male song sparrows, one of the most abundant native sparrows of North America, depends on their song repertoire, not the quality of their territory, according to new research. The researchers found that males with a larger repertoire produced and fledged more offspring annually. The study also found that these males moved […]
Posts by Kelly Fram (KellyFram)
Reminder for mushroom hunters 
Distinguishing poisonous mushrooms from edible varieties can be tricky as they can look so similar that even experts are challenged. A case reported in this week’s CMAJ reminds that “patients should be counselled that poisonous and edible mushrooms can be very similar in appearance and that wild mushrooms of uncertain identity should not be eaten. […]
Riding the winds of change could cause a feedback loop for flight times
Changes to the wind pattern due to climate change could cost an extra $47 billion USD in fuel, and an additional 4.6 million kg of CO2 emissions per year, for three flight paths between Hawaii and the western U.S.A. These changes could create a feedback loop as carbon emissions are expected to increase, causing further […]
Martian crust shows similarities to the Earth’s oldest continental crust
Silica-rich rocks found in the Martian crust shows ancient Mars may have been more similar to Earth than previously thought. These rocks are similar to some of the Earth’s oldest continental crust, which have, until now, only been observed in small, localized areas on Mars. The new findings suggest the the Red Planet has experienced […]
Small cell lung cancer occurs when two genes are switched off
Using whole-genome sequencing researchers found that small cell lung cancer (SCLC) occurs when both copies of two separate genes responsible for tumor suppression are switched off. The research team hopes this discovery will help the development of new treatments for SCLC, which usually results in patient-death within months. Researchers sequenced the genome of 110 tumor […]
Female black bears eat berries, males eat ants
Male and female black bears do not share the same diet, according to new findings. A research using GPS telemetry and scat analyses found that black bears’ diet depends on their sex and, for females, on their reproductive status. In the same habitats, “females with cubs-of-the-year tended to…feed on bunchberry, whereas females with yearling foraged […]
Complex eye found in single-celled organism
Researchers have found many of the components required for a complex eye in a single-celled organism, providing insight into the evolutionary origins of the eye. The findings show how a complex system can evolve in a simple organism. The research team examined warnowiids, a single-celled organism, and found that they have ocelloids, an eye-like structure […]
Living near trees leaves people feeling healthier
A new study of 13,000 residents of Toronto, suggests that living in a neighbourhood with more (and or larger) trees leads people to report feeling healthier. The research team used Toronto tree density data and combined this information with a self-reporting questionnaire of general health perception and certain medical conditions including heart disease, stroke and […]
Community based HIV prevention programs save $5 in treatment costs for every $1 spent
Community based HIV prevention programs helped stop 16,672 HIV infections between 1987 and 2011, saving the health care system approximately $6.5 billion. Researchers found that every dollar invested into community based HIV prevention programs saved approximately five dollars in provincial healthcare costs. The researchers used Ontario HIV surveillance reports to estimate the number of HIV […]
New species of horned dinosaur provides insight into Triceratops family evolution
A new species of horned dinosaur discovered in southern Alberta provides new information about the evolution of the Triceratops family of dinosaurs, the Ceratopsidae. The new species, Wendiceratops pinhornensis, is identified by 184 bones from at least four individuals. The Wendiceratop is an early species of horned dinosaur, living alongside the Albertaceratops, approximately 79 million […]
Visualizing chronic obstructive pulmonary disease using CT and MRI scans
Treatment for patients suffering from mild-to-moderate chronic obstructive pulmonary disease (COPD) could be improved through the use of magnetic resonance imaging (MRI) and computed tomography (CT) according to new research. Researchers found that both MRI and CT measurements helped explain symptoms in the patients that were unable to be explained using traditional methods alone. The […]
Comparing current and reduced carbon emissions shows benefit for the ocean
Researchers compared the effects of two different carbon emissions trajectories and found that reducing emissions to levels required to meet the Copenhagen Accord shows benefits in many areas for the world’s oceans. The research team found that if carbon emissions are mitigated the oceans will be cooler and less acidic. However if carbon emissions maintain […]
Traffic-related air pollution during pregnancy is a likely cause of asthma
Children exposed to high levels of traffic-related air pollution before they are born are more likely to suffer from asthma as children according to a study of Toronto neighbourhoods. The study also found that children in close proximity to high-traffic areas are more likely to suffer from asthma. Researchers analyzed the health and residential records […]
CT scanning for cancer redundant in blood clot patients
Computerized tomography scans, or CT scans, do not improve cancer detection rates, or shorten the time to diagnosis, in patients with unexplained blood clots in the lungs or legs. Previous studies suggest that up to 10 per cent of patients suffering from venous thromboembolism, blood clots in the lungs or legs, will be diagnosed with […]
Unnecessary imaging common among breast cancer patients
Most women diagnosed with early-stage breast cancer are given imaging tests to look for distant growths, despite official guidelines according to a new study. The research team found that over 79 per cent of women with stage I breast cancer, and over 92 per cent with stage II, received imaging tests despite having a less than two […]
Completing the puzzle of arthropod evolution
Newly discovered fossils from the Burgess Shale region are providing scientists with evidence of the evolutionary history of arthropods, a group including insects, spiders and crustaceans. The fossils have also allowed scientists to gather a complete picture of what Hallucigenia, an arthropod existing 508 millions years ago, looked like. The new fossils show that Hallucigenia had […]
