EAST LANSING, Mich. — Most of America’s urban cores were designed for walking but offer little in the way of supermarkets, healthy restaurants and other amenities for residents to walk to, according to a study led by a Michigan State University scholar.
The study is one of the first to show that poor residents living in declining urban neighborhoods want healthy food choices – evidenced by their willingness to travel long distances to find them. Past research has generally assumed that poor people will shop at whatever store is closest. (more…)
Researchers at the Yale School of Forestry & Environmental Studies have discovered that diseased trees may be a significant cause of global warming. The university’s researchers tested the trees at the Yale Myers Forest near their campus in Connecticut and discovered that rotting trees release a significant amount of methane gas, a highly flammable type of natural gas that can cause climate change in large quantities. The trees at the Yale Myers Forest produce emissions that are equivalent to burning 40 gallons of gas per acre of forest per year.
In their academic report on this matter, “Elevated Methane Concentrations in Trees of an Upland Forest,” the Yale University research team noted that trees that release methane gas look just like ordinary trees on the outside. However, on the inside, they’re being eaten alive by fungus. And the fungus that rots these trees helps fuel methane production because it makes the trees a hospitable breeding ground for methanogens, tiny organisms that create methane. (more…)
For years, many scientists had thought that plate tectonics existed nowhere in our solar system but on Earth. Now, a UCLA scientist has discovered that the geological phenomenon, which involves the movement of huge crustal plates beneath a planet’s surface, also exists on Mars.
“Mars is at a primitive stage of plate tectonics. It gives us a glimpse of how the early Earth may have looked and may help us understand how plate tectonics began on Earth,” said An Yin, a UCLA professor of Earth and space sciences and the sole author of the new research. (more…)
Researchers have made a major advance in efforts to regenerate damaged hearts. They discovered that transplanted heart muscle cells, grown from stem cells, electrically couple and beat in sync with the heart’s own mucle.(more…)
A third of Earth’s organisms live in rocks and sediments, but their lives have been a mystery
By some estimates, a third of Earth’s organisms live in our planet’s rocks and sediments, yet their lives are almost a complete mystery.
This week, the work of microbiologist James Holden of the University of Massachusetts-Amherst and colleagues shines a light into this dark world.
In the journal Proceedings of the National Academy of Sciences (PNAS), they report the first detailed data on methane-exhaling microbes that live deep in the cracks of hot undersea volcanoes. (more…)
EAST LANSING, Mich. — Innovative problem solving requires trying many different solutions. That’s true for humans, and now Michigan State University researchers show that it’s true for hyenas, too.(more…)
Robotic boats track radio-tagged common carp in area lakes
As a stiff breeze sweeps across Staring Lake in suburban Minneapolis, a five-foot, antenna-sporting robotic boat plies the water in a back-and-forth pattern.
On the shore, Volkan Isler follows the action as two graduate research assistants launch a second boat.
Today Isler, an associate professor of computer science at the University of Minnesota, and graduate students Pratap Tokekar and Josh Vander Hook have come to the lake to test the newer of the boats. Their mission: developing a new technology to track invasive fish.(more…)
COLUMBIA, Mo. — Freedom of the press is viewed by many as a cornerstone of democracy. But can it actually help improve people’s lives and make them happy? Researchers at the University of Missouri have found that citizens of countries with press freedom tend to be much happier than citizens of countries without free presses. Edson Tandoc, Jr., a doctoral student in the MU School of Journalism, says that press freedom directly predicts life satisfaction across the world.
“We already know that having reliable, objective news sources can benefit democracy, but in this study, we found that press freedom also benefits communities by helping improve the overall quality of life of citizens and, in the process, by also making them happier,” Tandoc said. “People enjoy having an element of choice about where they get their news. Citizens of countries without a free press are forced to rely on the government for information, when what people really want is diversity in content where they are free to get the information they want from the source of their choosing.” (more…)
