News & HighlightsNews
A common brain cell shapes the nervous system in unexpected ways
More than half of our brains are made up of glial cells, which wrap around nerve fibers and insulate them—similarly to how the plastic casing of an electric cable insulates the copper wire within—allowing electrical and chemical impulses to travel faster. In the past, neuroscientists considered ...
A newly discovered way for cells to die
Some cells are meant to live, and some are meant to die. The linker cell of Caenorhabditis elegans, a tiny worm that is a favored model organism for biologists, is among those destined for termination. This cell helps determine the shape of the gonad in male worms—and then it dies, after two days...
Sweet tooth? Flies have it too—and new research explains how they know what to eat and when to stop
All animals, including humans, love sweet food. But if you’re someone who never turns down dessert under normal circumstances, try wolfing down six donuts as a scientific experiment. Even the moistest, most velvety piece of chocolate cake will seem a lot less appetizing—and you will likely eat l...
Using magnetic forces to control neurons, study finds the brain plays key role in glucose metabolism
To learn what different cells do, scientists switch them on and off and observe what the effects are. There are many methods that do this, but they all have problems: too invasive, or too slow, or not precise enough. Now, a new method to control the activity of neurons in mice, devised by scienti...
Parasites reveal how evolution has molded an ancient nuclear structure
Long before animals evolved from sponges, and before plants evolved out of algae, there was a pivotal event that allowed complex, multicellular organisms to arise: the development of the nucleus in single-celled organisms. Eukaryotes, one of the three main branches of living organisms, are define...
A virus common among livestock depends on a microRNA to replicate
In the ongoing arms race between pathogenic viruses and the cells they infect, each side needs every advantage it can get. One way wily viruses can get a leg up is by subverting the microRNAsĚý(miRNAs) of their host. These miRNAs are small stretches of RNA made by host cells to regulate gene expre...
New findings suggest severe tornado outbreaks are increasingly common
One tornado alone can cause intense destruction, but the largest impact on both death rates and economic losses stems from “outbreaks,” in which six or more tornadoes occur within a limited time. New research from Joel Cohen, Abby Rockefeller Mauzé Professor and head of the Laboratory of Pop...
New research clarifies how stem cells get activated to produce new hair—and what happens when their regenerative powers wear out
Adult stem cells provide the body with a reservoir from which damaged or used up tissues can be replenished. In organs like the intestines and skin, which need constant rejuvenating, these stem cells are dividing frequently. But in other body structures, including the hair follicles, they are hel...
Metabolism protein found to also regulate feeding behavior in the brain
The molecular intricacies of hunger and satiety, pivotal for understanding metabolic disorders and the problem of obesity, are not yet fully understood by scientists. However, new research from ĐÓ°É reveals an important new component of the system responsible for regulating ...
Scientists question a popular theory about how the nervous system trims its branches
As tiny embryos in the womb, we start out with a lot more neuronal material than we actually need. During development, the body drastically prunes back the excess—cutting the branches from nerve cell bodies, known as axons, as well as entire neurons. Scientists have long assumed that the decisi...
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