Waste-generated biogas is turning homes into power plants.

Waste-generated biogas is turning homes into power plants.Sandra Sassow wants to talk about sticky subject of waste. Just the word, the umbrella term for our uneaten – or indeed, post-eaten – food carries the whiff of dismissal (among other things). What’s in those bin bags? Just waste. What about the septic tank? Waste. Nothing of value. But ‘waste’ – at least most of it – isn’t just some unavoidable byproduct of human life, that accumulates until the council turns up to put it out of sight and out of mind once a week. If you can get past the ‘yuck’ factor, it could be what powers your home, apartment block, supermarket, workplace or even your hospital.

Dogs' social skills linked to oxytocin sensitivity.

Dogs' social skills linked to oxytocin sensitivity.The tendency of dogs to seek contact with their owners is associated with genetic variations in sensitivity for the hormone oxytocin, according to a new study. The results contribute to our knowledge of how dogs have changed during their development from wolf to household pet. During their domestication from their wild ancestor the wolf to the pets we have today, dogs have developed a unique ability to work together with humans. One aspect of this is their willingness to "ask for help" when faced with a problem that seems to be too difficult. There are, however, large differences between breeds, and between dogs of the same breed.

Fish shrinking as ocean temperatures rise.

Fish shrinking as ocean temperatures rise. One of the most economically important fish is shrinking in body weight, length and overall physical size as ocean temperatures rise, according to new research by LSU Boyd Professor R. Eugene Turner . The average body size of Menhaden -- a small, silver fish -- caught off the coasts from Maine to Texas -- has shrunk by about 15 percent over the past 65 years.

90 percent of fish used for fishmeal are prime fish.

90 percent of fish used for fishmeal are prime fish.From 1950 to 2010, 27 percent of commercial marine landings were diverted to uses other than direct human consumption, a new research project has found. Every year for the past 60 years, an average of 20 million tonnes of fish caught in the global ocean have not been used to nourish people. A new study emerging from the Sea Around Us project at the University of British Columbia's Institute for the Oceans and Fisheries reveals that from 1950 to 2010, 27 per cent of commercial marine landings were diverted to uses other than direct human consumption. This trend has not changed in recent years and it poses serious questions regarding food security, as most of the diverted fish are classified as food-grade or prime food-grade. more

Climate change, population growth may lead to open ocean aquaculture.

Climate change, population growth may lead to open ocean aquaculture.A new analysis suggests that open-ocean aquaculture for three species of finfish is a viable option for industry expansion under most climate change scenarios -- an option that may provide a new source of protein for the world's growing population. This modeling study found that the warming of near-shore surface waters would shift the range of many species toward the higher latitudes -- where they would have better growth rates -- but even in areas that will be significantly warmer, open-ocean aquaculture could survive because of adaptation techniques including selective breeding. more

'Squirtable' elastic surgical glue seals wounds in 60 seconds.

'Squirtable' elastic surgical glue seals wounds in 60 seconds.A highly elastic and adhesive surgical glue that quickly seals wounds without the need for common staples or sutures could transform how surgeries are performed. Biomedical engineers from the University of Sydney and the United States collaborated on the development of the potentially life-saving surgical glue, called MeTro. MeTro's high elasticity makes it ideal for sealing wounds in body tissues that continually expand and relax -- such as lungs, hearts and arteries -- that are otherwise at risk of re-opening. continue

Breast cancer linked to bacterial imbalances.

Breast cancer linked to bacterial imbalances.Researchers have uncovered differences in the bacterial composition of breast tissue of healthy women vs. women with breast cancer. The research team has discovered for the first time that healthy breast tissue contains more of the bacterial species Methylobacterium, a finding which could offer a new perspective in the battle against breast cancer. Bacteria that live in the body, known as the microbiome, influence many diseases. Most research has been done on the "gut" microbiome, or bacteria in the digestive tract. Researchers have long suspected that a "microbiome" exists within breast tissue and plays a role in breast cancer but it has not yet been characterized. The research team has taken the first step toward understanding the composition of the bacteria in breast cancer by uncovering distinct microbial differences in healthy and cancerous breast tissue. continue