Life
We summarize the week's scientific breakthroughs every Thursday.
- Life
When bacteria-killing viruses take over, it’s bad news for the gut
A rise in some bacteria-killing viruses in the intestines may deplete good bacteria and trigger inflammatory bowel diseases.
- Animals
If pursued by a goshawk, make a sharp turn
Scientists put a tiny camera on a northern goshawk and watched it hunt. The bird used several strategies to catch prey, failing only when its targets made a sharp turn.
- Genetics
Scientists find new way to corral genetically engineered bacteria
Engineering E. coli to depend on human-made molecules may keep genetically modified bacteria from escaping into nature.
- Neuroscience
Brain’s protective barrier gets leakier with age
Aging influences the breakdown of the blood-brain barrier, which may contribute to learning and memory problems later in life.
- Animals
Diving marine mammals take deep prey plunges to heart
In spite of their diving prowess, Weddell seals and bottlenosed dolphins experience irregular heart rates when they venture beyond 200 meters under the sea.
- Health & Medicine
Immune system ‘reset’ may give MS patients a new lease on life
With the help of their own stem cells, MS patients can stop the disease in its tracks in many cases.
- Animals
Cringe away, guys — this spider bites off his own genitals
After sex, a male coin spider will chew off his own genitals, an act that might help secure his paternity.
- Neuroscience
Newly identified brain circuit hints at how fear memories are made
A newfound set of brain connections appears to control fear memories, a finding that may lead to a better understanding of PTSD and other anxiety disorders.
- Animals
Cone snail deploys insulin to slow speedy prey
Fish-hunting cone snails turns insulin into a weapon that drops their prey’s blood sugar and eases capture.
- Life
Human evolution tied to a small fraction of the genome
Natural selection has concentrated on a small portion of the human genome, and mostly not on genes themselves.
- Animals
Lemurs aren’t pets
The first survey of lemur ownership in Madagascar finds that thousands of the rare primates are held in households.
- Life
Fossilized fish skull shakes up the evolutionary history of jaws
Analysis of a 415-million-year-old fossilized fish skull suggest that the earliest jawed vertebrates probably looked a lot like modern bony fish.
