Experts estimate that illegal cartels of businesses harm consumers to the tune of many billions of dollars annually as they secretly collude to set prices, allocate territory, and distort market competition for their own financial benefit. In a new Significance article, Carsten Crede, of the Centre for Competition Policy and the School of Economics at the University of East Anglia, outlines the pros and cons of cartel screens, which are statistical tools to help spot bad business behavior.

Crede notes that cartel screens do not definitively prove bad behavior, but they flag where authorities should take a closer look.

WASHINGTON (Feb. 16, 2016) -- Viewing graphic anti-smoking images on cigarette packs triggers activity in brain areas involved in emotion, decision-making and memory as observed via brain scans. Researchers from Georgetown University Medical Center and Truth Initiative reported their findings online this week in Addictive Behaviors Reports.

The brain scanning study, the first to be conducted in young adult smokers, suggest these images could effectively warn smokers about cigarettes' health consequences, says the study's co-lead author, Darren Mays, PhD, MPH, an assistant professor of oncology at Georgetown Lombardi Comprehensive Cancer Center in Washington, DC.

Breast cancers which are particularly complex and diverse, as judged by a test used in ecology to analyse species of animals and plants, are particularly likely to progress and lead to death, a new study shows.

The test could be used in the clinic to assess how likely women's breast cancers are to be aggressive, and to help tailor treatment accordingly.

Scientists at The Institute of Cancer Research, London, developed a test called the Ecosystem Diversity Index which combines methods used by ecologists with a powerful cancer imaging technique to pick out cancerous cells from normal cells in tumours.

PHILADELPHIA - It turns out that the type, how frequent, and where new mutations occur in the human genome depends on which DNA building blocks are nearby, found researchers from the Perelman School of Medicine at the University of Pennsylvania in an advanced online study published this week in Nature Genetics.

A simple blood test that can accurately diagnose active tuberculosis could make it easier and cheaper to control a disease that kills 1.5 million people every year.

Researchers at the Stanford University School of Medicine have identified a gene expression "signature" that distinguishes patients with active tuberculosis from those with either latent tuberculosis or other diseases.

The technology fills a need identified by the World Health Organization, which in 2014 challenged researchers to develop better diagnostic tests for active TB.

A paper describing the work will be published online in Lancet Respiratory Medicine on Feb. 19.

Less than 40% of the results of clinical trials conducted at leading academic medical centers were shared within two years of completion, finds a study in the British Medical Journal.

New research published in Scientific Reports in February indicates that a warm ocean surface water prevailed during the last ice age, sandwiched between two major ice sheets just south of Greenland.

Extreme climate changes in the past
Ice core records show that Greenland went through 25 extreme and abrupt climate changes during the last ice age some 20.000 to 70.000 years ago. In less than 50 years the air temperatures over Greenland could increase by 10 to 15 °C. However the warm periods were short; within a few centuries the frigid temperatures of the ice age returned. That kind of climate change would have been catastrophic for us today. (link)

Rutgers scientists have taken a step toward understanding how sexual aggression alters the female brain.

In a recent study in Scientific Reports, lead author Tracey Shors, professor in the Department of Psychology and Center for Collaborative Neuroscience in the School of Arts and Sciences, discovered that prepubescent female rodents paired with sexually experienced males had elevated levels of stress hormones, could not learn as well, and expressed reduced maternal behaviors needed to care for offspring.

It's a well-known fact that aging can lead to losing one's senses: vision, smell, hearing, touch, and taste. In previous studies, researchers have learned about the consequences of experiencing a decline in a single sense. For example, losing senses of smell, vision, and hearing have all been linked to cognitive decline, poor mental health, and increased mortality. Losing the sense of taste can lead to poor nutrition and even death in certain instances. However, until now little has been known about losing multiple senses. In a new study, researchers examined how often multisensory losses occur and what their impact on older adults might be.

Last year, 6 million tons of “wood pellets” harvested from forests in Louisiana, Georgia, Florida, Alabama and Virginia were shipped across the Atlantic, to be burnt in renewable “biomass” power plants.

This was almost double the 2013 figure. The US “wood pellet” industry is booming.