From Rivers to Landslides: Charting the Slopes of Sediment Transport

In Caltech's Earth Surface Dynamics Lab the behavior of rivers is modeled through the use of artificial rivers through which water can be pumped at varying rates over a variety of sediments.

Galaxies on FIRE: Star Feedback Results in Less Massive Galaxies

By incorporating the data of individual stars into whole-galaxy models, Caltech researchers can look at the actual effects of star feedback—how radiation from stars "pushes" on galactic matter—in the galaxies they study.

Fighting Flies

According to the latest studies from the fly laboratory of Caltech biologist David Anderson, male fruit flies fight more than their female counterparts because they have special cells in their brains that promote fighting. These cells appear to be absent in the brains of female fruit flies.

Bacterial "Syringe" Necessary for Marine Animal Development

"It was a tremendous surprise that the agent that drives metamorphosis is such an elaborate, well-organized injection machine," says coauthor Grant Jensen.

Assessing Others: Evaluating the Expertise of Humans and Computer Algorithms

The subjects were asked to observe the shifting value of a hypothetical financial asset and make predictions about whether it would go up or down, while simultaneously interacting with an "expert" who was also making predictions.

Megafloods: What They Leave Behind

South-central Idaho and the surface of Mars have an interesting geological feature in common: amphitheater-headed canyons. These U-shaped canyons with tall vertical headwalls are found near the Snake River in Idaho as well as on the surface of Mars, according to photographs taken by satellites.

New Curiosity Papers Published

New research articles on the Mars Science Laboratory mission have recently been published.

First Rock Dating Experiment Performed on Mars

Although researchers have determined the ages of rocks from other planetary bodies, the actual experiments—like analyzing meteorites and moon rocks—have always been done on Earth. Now, for the first time, researchers have successfully determined the age of a Martian rock—with experiments performed on Mars.

Probiotic Therapy Alleviates Autism-like Behaviors in Mice

"Traditional research has studied autism as a genetic disorder and a disorder of the brain, but our work shows that gut bacteria may contribute to ASD-like symptoms in ways that were previously unappreciated," says Sarkis Mazmanian.

Himiko and the Cosmic Dawn

Himiko, a "space blob" named after a legendary queen from ancient Japan, is a simply enormous galaxy, with a hot glowing gaseous halo extending over 55,000 light-years. Not only is Himiko very large, it is extraordinarily distant, seen at a time approximately 800 million years after the Big Bang.

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