A new global analysis of seafood found that fish populations throughout the world's oceans are contaminated with industrial and agricultural pollutants, collectively known as persistent organic pollutants (POPs). The study from researchers at Scripps Institution of Oceanography at UC San Diego also uncovered some good news?concentrations of these pollutants have been consistently dropping over the last 30 years.

Flint, Michigan temporarily switched its water supply from Lake Huron to the Flint River in April 2014 to cut costs. Should officials have known that lead contamination would result?

Many people will see the snow currently blanketing much of the U.S. Eastern Seaboard as a nuisance coating sidewalks and roads. Others are celebrating it as an excuse to spend the day swooshing down a hill.

As for me, I like to think of snow as food.

Growing up in Missouri, I consumed as much snow ice cream as possible from November to March. Each time the winter sky let loose, I caught a bowl of fresh flakes. My grandmother mixed raw eggs, cream and sugar and poured it over top.

Snow is one of the first "wild" foods small humans learn to forage. And this time of year it's both free and plentiful to many.

Meals consumed at fast-food restaurants are often seen as one of the biggest contributors to the obesity epidemic. But according to a new study in the Journal of the American Academy of Nutrition and Dietetics, 92 percent of 364 measured restaurant meals from both large-chain and non-chain (local) restaurants exceeded recommended calorie requirements for a single meal. In 123 restaurants in three cities across America, the research team found that a single meal serving, without beverages, appetizers, or desserts sometimes exceeded the caloric requirements for an entire day.

Burning down forests in Africa and South-East Asia causes ozone pollution in the air as far as the western Pacific Ocean, researchers say, calling for revision of global climate models to reflect their findings.

In a paper published in Nature Communications last week (13 January), the scientists say their data contradicts earlier theories on the origins of ozone-rich air parcels above the tropical western Pacific, which were thought to descend naturally from a higher atmospheric layer.

It takes just one-tenth of a second for our brains to begin to recognize emotions conveyed by vocalizations, according to researchers from McGill. It doesn't matter whether the non-verbal sounds are growls of anger, the laughter of happiness or cries of sadness. More importantly, the researchers have also discovered that we pay more attention when an emotion (such as happiness, sadness or anger) is expressed through vocalizations than we do when the same emotion is expressed in speech. 

The researchers believe that the speed with which the brain 'tags' these vocalizations and the preference given to them compared to language, is due to the potentially crucial role that decoding vocal sounds has played in human survival.

Reduced meat consumption might not lower greenhouse gas emissions from a major beef producing region, research shows.

The finding may seem incongruous, as intensive agriculture is responsible for such a large proportion of global emissions.

According to research by University researchers, Scotland’s Rural College and Brazilian Agricultural Research Corporation, reducing beef production in the Brazilian Cerrado could increase global greenhouse gas emissions.

While research has already established that B vitamin supplements can help slow mental decline in older people with memory problems, an international team have now found that having higher levels of Omega-3 fatty acids in your body could boost the B vitamins' effect.

The team, from the Universities of Cape Town, Oslo, Oxford and the UAE, studied more than 250 people with mild cognitive impairment (MCI) in Oxford. MCI is when brain function is below what is normally expected for a person’s age but is not significant enough to interfere with daily life. While it is not as serious as dementia, if untreated it often progresses to become dementia.

Dr Celeste de Jager said: 'We previously found that B vitamins are able to slow or prevent the atrophy of the brain and memory decline in people with MCI. This was most effective in those who had above average blood levels of homocysteine, a factor related to B vitamin status that may be toxic to the brain.  Scientists in our team initially found that there was a link between Omega-3 levels, homocysteine, and brain atrophy rates.

A UC Davis scientist flying in a pollution-detecting airplane provided the first, and so far only, estimates of methane emissions spewing from the Aliso Canyon Natural Gas Storage Facility in Southern California since the leak began on Oct. 23, 2015.

Those estimates were provided to the California Air Resources Board in November. Pilot and UC Davis project scientist Stephen Conley continues to measure emissions from the still uncontrolled leak, which has displaced thousands of residents in the affluent Porter Ranch neighborhood in northern Los Angeles. On Jan. 6, Gov. Jerry Brown declared a state of emergency in the community.

To date, Conley estimates that the leak has emitted nearly 80,000 tons of methane, or about 1,000 tons per day.

Electronic cigarettes are widely promoted and used to help smokers quit traditional cigarettes, but a new analysis from UC San Francisco found that adult smokers who use e-cigarettes are actually 28 percent less likely to stop smoking cigarettes.

The study — a systematic review and meta-analysis of published data — is the largest to quantify whether e-cigarettes assist smokers in quitting cigarettes.

The findings will be published online January 14 in The Lancet Respiratory Medicine.

“As currently being used, e-cigarettes are associated with significantly less quitting among smokers,” concluded first author Sara Kalkhoran, MD who was a clinical fellow at the UCSF School of Medicine when the research was conducted. She is now at Massachusetts General Hospital and Harvard Medical School.