The risk of a heart attack is 8.5 times higher in the two hours following a burst of intense anger, according to a study that investigated the link between acute emotional triggers and high risk of severe cardiac episodes.
A new study has demonstrated that consumption of a peanut-containing snack by infants who are at high-risk for developing peanut allergy prevents the subsequent development of allergy. This is the first randomized trial to prevent food allergy in a large cohort of high-risk infants.
How can tropical birds cope with the high rates of nest predation that are typical in most tropical habitats? One species does it through a rare example of Batesian mimicry in which the nestling tricks predators into thinking that it is a toxic, spiny caterpillar rather than a highly edible bird.
When exposed to nitrogen fertilizer over a period of years, nitrogen-fixing bacteria called rhizobia evolve to become less beneficial to legumes– the plants they normally serve. In natural areas adjacent to farmland, where fertilizer runoff occurs, or in areas where nitrogen oxides from the burning of fossil fuels settle, a change in the quality of soil rhizobia could have large consequences.
Scientists have demonstrated how an external stimulus of low-level electricity can literally change the way we think, producing a measurable up-tick in the rate at which daydreams occur. Along the way, they made another surprising discovery: while daydreams offer a welcome “mental escape” from boring tasks, they also have a positive, simultaneous effect on task performance.
Obesity causes inflammation, which can, in turn, lead to type 2 diabetes. Now, researchers have discovered that the inflammatory molecule LTB4 promotes insulin resistance, a first step in developing type 2 diabetes. What’s more, they found that genetically removing the cell receptor that responds to LTB4, or blocking it with a drug, improves insulin sensitivity in obese mice.
Great, wonderful, wacky things can come in small genomic packages. That’s one lesson to be learned from the carnivorous bladderwort, a plant whose tiny genome turns out to be a jewel box full of evolutionary treasures.
Lack of oxygen is a major problem in many of the world's waters. Now, researchers have installed pumps in a Swedish fjord that showed a strong oxygen deficit and are reporting that all the right oxygen-loving organisms have come back to the fjord.
Using ultracold atoms as a stand-in for electrons, a team of physicists has simulated superconducting materials and made headway on a problem that’s vexed physicists for nearly three decades.
Our brains generate a constant hum of activity: as neurons fire, they produce brain waves that oscillate at different frequencies. Long thought to be merely a byproduct of neuron activity, recent studies suggest that these waves may play a critical role in communication between different parts of the brain.
Flaws in a method commonly used in censuses of tigers and other rare wildlife put the accuracy of such surveys in doubt. A study has exposed inherent shortcomings in the “index-calibration” method. Among recent studies thought to be based on this method is India's national tiger survey, published in January, which claimed a surprising, but welcome, 30 percent rise in tiger numbers in just four years.
Scientists have succeeded in using a 3-D printed guide to help nerves damaged in traumatic incidents repair themselves. The team used the device to repair nerve damage in animal models and say the method could help treat many types of traumatic injury.
Researchers have found that having too many food choices increases the obesity problem. A study showed that, when faced with a choice of a high-fat and low-fat diet, kids tended to eat more.
Coastal communities in 15 states that depend on the $1 billion shelled mollusk industry— primarily oysters and clams— are at long-term economic risk from the increasing threat of ocean acidification, the first nationwide vulnerability analysis concludes.
A sauna may do more than just make you sweat. A new study suggests men who engaged in frequent sauna use had reduced risks of fatal cardiovascular events and all-cause mortality.