Using mathematical modeling, researchers have shown that commensal bacteria that cause problems later in life most likely played a key role in stabilizing early human populations. The finding offers an explanation as to why humans coevolved with microbes that can cause or contribute to cancer, inflammation and degenerative diseases of aging.
Powdered alcohol hasn't even arrived in stores yet, but states already are moving to ban the product touted by its inventor as an easy way to mix a drink on the go. Colorado is the latest state considering prohibiting "Palcohol" amid concern it will increase underage drinking.
Electronic cigarettes have surpassed traditional smoking in popularity among teens, the government's annual drug use survey finds. Even as tobacco smoking by teens dropped to new lows, use of e-cigarettes reached levels that surprised researchers.
There is promising evidence that the popular mind-body practice of yoga is beneficial in managing and improving the risk factors associated with cardiovascular disease and is a potentially effective therapy for cardiovascular health.
When you open the refrigerator for a late-night snack, are you more likely to grab a slice of chocolate cake or a bag of carrot sticks? Your ability to exercise self-control may depend upon just how quickly your brain factors healthfulness into a decision.
People who own all-electric cars where coal generates the power may think they are helping the environment. But, a new study finds their vehicles actually make the air dirtier, worsening global warming. Ethanol isn't so green, either.
Known to its Polynesian inhabitants as Rapa Nui, Easter Island is thought to have been colonized around the 13th Century and is famed for its mysterious large stone statues or moai. A student analyzing dental calculus from ancient teeth is helping resolve the question of what plant foods Easter Islanders relied on before European contact.
Researchers have developed the first large animal model of an inherited arrhythmic syndrome– an advance that will lead to a better understanding of the biologic mechanisms important in normal heart conduction and rhythm. The novel pig model points the way toward development of better treatments for inherited forms of life-threatening arrhythmias, which are a significant cause of sudden cardiac death.
Researchers have found that brain stimulation may help retrain unhelpful cognitive habits associated with anxiety and depression. The study revealed that around 20 minutes of targeted electrical stimulation to a region of the frontal cortex could dramatically improve the effectiveness of a computer-based task designed to retrain unhelpful patterns of attention that are known to maintain high levels of anxiety.
Nowadays, most of food packaging is derived from petrochemicals and not always biodegradable. Moreover, consumers often find that there is more packaging than content. To address these problems, researchers are producing packaging made from PBS, which is based on vegetable biomass.
New findings could provide a pathway toward a kind of two-dimensional microchip that would make use of a characteristic of electrons other than their electrical charge, as in conventional electronics. The new approach is dubbed “valleytronics,” because it makes use of properties of an electron that can be depicted as a pair of deep valleys on a graph of their traits.
A rare weather phenomenon at the Grand Canyon had visitors looking out on a sea of thick clouds just below the rim last week. Cory Mottice of the National Weather Service said the weather event happens about once every several years, though the landmark was treated to one last year.
Early discoveries by NASA’s newest Mars orbiter are starting to reveal key features about the loss of the planet’s atmosphere to space over time. The observations reveal a new process by which the solar wind can penetrate deep into a planetary atmosphere.
A linguistic analysis by a team of scientists has revealed that the same species of monkeys located in separate geographic regions use their alarm calls differently to warn of approaching predators. The study found that monkey calls have a more sophisticated structure than was commonly thought.
Because of undetected toxicity problems, about a third of prescription drugs approved in the U.S. are withdrawn from the market or require added warning labels limiting their use. An exceptionally sensitive toxicity test could make it possible to uncover more of these dangerous side effects early in pharmaceutical development so that fewer patients are given unsafe drugs.