Uncategorized
- Astronomy
Enormous black hole resides at core of tiny galaxy
A small galaxy stores 15 percent of its mass in a black hole, suggesting compact galaxies might be shreds of once larger galaxies.
- Tech
Long after JFK assassination, gunshot forensics still limited
The Warren Commission Report included the results of a neutron activation analysis test of Lee Harvey Oswald. But even that high-tech analysis can't distinguish the type of weapon fired.
- Life
Molecule boosts numbers of stem cells in umbilical cord blood
A new molecule multiplies stem cells in umbilical cord blood. More blood-making stem cells could mean more effective transplants for people with blood cancers.
- Earth
Shrinking ancient sea may have spawned Sahara Desert
The Saharan Desert probably formed 7 million years ago as the ancient Tethys Sea, the forerunner of the Mediterranean Sea, shrank.
- Tech
Octobot uses webbed arms to swim faster
Octopus-inspired robot could one day help researchers observe underwater ecosystems.
- Materials Science
Making metamaterials ‘digital’ could simplify invisibility cloaks
The digital world of 1s and 0s has inspired a simpler way to make complex metamaterials.
- Life
Artificial sweeteners may tip scales toward metabolic problems
The artificial sweetener saccharin meddles with the gut’s microbial community, setting in motion metabolic changes associated with obesity and diabetes.
- Anthropology
Strategy, not habitat loss, leads chimps to kill rivals
Human impacts on chimpanzees have not increased their violence.
- Health & Medicine
Sleep drunkenness might be common
A new survey shows that about 15 percent of people sometimes wake up disoriented and confused, a condition called sleep drunkenness.
- Astronomy
Tweak to dark matter may explain Milky Way mystery
Dark matter weakly interacting with light in the early universe might have prevented satellite galaxies from forming around Milky Way, astronomers propose.
- Quantum Physics
Three photons entangled, not just two
Physicists have found a way to entangle a trio of photons, but it works only once in every quadrillion attempts.
- Tech
Hydrogen made using sunlight, cheap materials
Photosynthesis-inspired fuel cell uses water to make hydrogen gas and could feature in next-generation cars.
