Babies born in Canada from immigrant mothers, especially from East and South Asian mothers, are often of lower weight than babies from Canadian’s mothers, but it’s not worrisome a new study shows. It’s usually thought that smaller infants are more likely to die or suffer adverse events than heavier infants. Research now shows that clinicians […]
Category: Paper of Interest
No sitting duck(bill) – how hadrosaurs won the “dino derby”
A new paper indicates that hadrosaurs – also known as duck-billed dinosaurs – were built for endurance rather than speed, and that this helped them avoid predators despite their lack of horns or armour. Computer analysis of leg bones showed that a critical muscle known as the caudofemoralis attached lower on the thigh in hadrosaurs […]
Why anesthesia may cause memory problems
After surgery using a general anesthetic, up to a third of patients experience memory problems for months afterward and a new study helps explain why. Many anesthetics work by binding to specific receptors (GABA A receptors) in the brain and increasing the function of these receptors, leading to drowsiness and memory loss. The new study shows […]
This robot makes you feel like there’s someone behind you
A new study sheds light on the mechanisms underlying the “feeling of presence” phenomenon, where people feel like there is a presence with them in a room even though they are alone. Scientists usually attribute this feeling to medical conditions such epilepsy, stroke, migraine and tumors. Researchers have now devised a robot capable of giving […]
How squirrels avoid ‘roid rage
A new study shows that Arctic ground squirrels use anabolic steroids to beef up for winter hibernation, but that they have evolved systems to avoid the negative side effects. Most hibernating animals burn fat during the winter, Arctic ground squirrels hibernate at such low temperatures that they need to burn muscle as well. A previous […]
How to prevent a world without antibiotics
A new mathematical model suggests that in addition to looking for new drugs, we should also be using strategies to prolong the life of old ones. Most drugs only work for a certain period of time until organisms develop resistance. This lifetime can be prolonged by using antibiotics sparingly or combining them into ‘drug cocktails’ […]
Micro-scallop robot could swim in human blood
Researchers have created an artificial micro-swimmer which could swim through viscous fluids such as saliva and blood by opening and closing its shells at different rates. The robot consists of two silicone polymer shells, each only 300 micrometres in size, connected by a single hinge. An external magnetic field is used to drive the movement […]
Robo-penguin could help monitor animal movements
A robotic rover disguised to look like a penguin has shown promise in helping to track animal movements. In some fields, such as fish farming, animals are implanted with passive integrated transponder (PIT-tags), a kind of electronic barcode that can be read by a hand-held device at a distance of up to 2 feet. However, […]
What exactly is an unusual sexual fantasy?
A new paper makes one of the first attempts to determine which types of sexual fantasies are rare, unusual, common, or typical from a statistical point of view. The authors used an internet survey with 1,516 adults from Quebec who ranked 55 sexual fantasies and wrote their own favourite. The survey indicated that men have […]
A new take on time’s arrow
Why does time flow forward? A new paper suggests that the traditional explanation is flawed and suggests a new one. Current theories invoke the law of entropy, which states that systems naturally move from more ordered states to more disordered ones. But the authors point out that the early universe – a tiny ball of […]
Mongolian fossil finds expand ankylosaur family tree
A new paper on ankylosaurs from Mongolia has named one new species and ‘resurrected’ another. The new species is Zaraapelta nomadis: ‘Zaraapelta’ is a combination of the Mongolian and Greek words for ‘hedgehog’ and ‘shield’ and refers to the elaborate pattern of bumps and grooves near the eye and a ridge along the back of […]
Is this fruit fly being friendly?
A new computer-based tool for analyzing the social behaviour of fruit flies and could tell us more about how genes affect social behaviour. Previous studies of social behaviour in fruit flies relied on researchers to judge for themselves what constituted a true social interaction. The computer method uses machine vision to analyze the distance between […]
Ebola: Status quo in Liberia could be deadly
A mathematical model suggests that no single intervention is sufficient to curb the Ebola epidemic in West Africa. The authors modelled the potential effect of four non-pharmaceutical interventions recommended by the WHO, such as isolating Ebola cases at hospitals, quarantining patients’ contacts, and implementing sanitary funeral practices. Their model suggest that no single intervention is […]
Alternative hospital funding can be risky
A review of worldwide experience with an alternative model of hospital funding suggests that it increases the number of patients needing post-acute care. Activity-based funding (ABF) is a system whereby hospitals are paid a set rate for each episode of care, intended to fund the bundle of services provided to patients with particular diagnoses, as […]
Deepwater Horizon: soiled ocean floor
After the 2010 Deepwater Horizon incident, the fate of around two million barrels of oil out of the five million barrels released in the Gulf of Mexico was uncertain. R esearchers now estimate that much of these two million barrels has settled on the ocean floor around the well at a depth of 1.5 km. They looked […]
Ancient Arctic viruses still infect plants
The genome of a virus found in 700-year-old frozen caribous feces was shown to infect plants in the laboratory, a new study reveals. Researchers analyzed the viral genetic material contained in a core drilled through layers of accumulated caribou feces up to 4,000 years old in an ice patch in Canada’s Selwyn Mountain in the […]