Life & Non-humans

Break out the poison, boys

A panel of scientists has determined that poison is the best way to rid a Maryland pond of the carnivorous northern snakehead. The fish, a native of China, was introduced into the pond by a pet owner who tired of caring for the animals. Only problem is, the snakeheads are eating everything in sight, devastating the pond’s ecosystem. Worse, the insatiable critters can last three days out of water, often traveling short distances across land on their fins. And the Little Patuxent River is about 75 yards away. According to the Associated Press, “The panel considered several ways to get rid of the snakeheads, including removing them through trapping, netting and electroshock stunning. But those options would not ensure that every last fish was killed. The group also considered draining and filtering the pond, but that posed logistical difficulties.”

Looks like some kinda smart rodent

A single gene change that boosts the amount of a certain protein in early brain cells causes mice to develop abnormally large brains, Reuters Health reports. Normal mice have smooth, flat brains. But tinker with the gene in question and suddenly the little furballs develop brains so big they fold in on themselves, forming the wrinkles, ridges and crevices found also in the human brain. Study author Dr. Anjen Chenn of Brigham and Women’s Hospital and Harvard University in Boston said the finding might help researchers understand how humans came to develop brains so much bigger than those of other mammals. Whether or not more size means more smarts is uncertain, Chenn said. “It is quite an interesting question … and that’s something we want to look at in the future.”

Sh*t a brick

Taiwanese researchers say they’ve crafted a win-win situation in the discovery that sewage sludge can be used to bulk up construction bricks. The bio-bricks contain up to 30 percent sludge, which can come from either industrial slurry or the, er, human waste stream. Because the bricks are kiln-fired at 900C, all bacteria and viruses are destroyed. Plus the process seals in any heavy metals that might be present. Best of all, the researchers say, the bricks don’t smell at all. The team behind the discovery admits that people might need some convincing to live in such intimate contact with their past meals, noting that legal approval and public acceptance remain to be sought.

Global population says ‘Pass the chicken’

Meat-eating is on the rise around the globe, a trend that could raise the risk of animal disease spread across borders, the Food and Agriculture Organization of the United Nations (FAO) said this week in a document circulated at a meeting on meat and dairy products. Worldwide meat consumption is expected to grow by 2 percent each year until 2015 — the result of population increases, rising incomes, and the movement of people from rural areas to cities. “However, increased volume of trade and improvements in transportation, infrastructure and technology hold potential risks of spreading of animal diseases rapidly worldwide,” FAO warned.