Dark matter is "dark" because no one knows what it is and a blanket term for whatever outnumbers particles of regular matter by more than a factor of 10 is necessary.

Because it can't be detected, dark matter is inferred by gravitational influence in galaxies, and by measuring the mass of a nearby dwarf galaxy called Triangulum II, Assistant Professor of Astronomy Evan Kirby says they may have found the highest concentration of dark matter in any known galaxy. 

What happens to your body in space? NASA's Human Research Program has been trying to provide answers for a decade.

Nature is out to kill us all on earth and space is no different. On top of that, we are isolated from family and friends, exposed to more radiation that could increase lifetime risk for cancer, eat a diet high in freeze-dried food, and work hard all while confined with three co-workers picked by your boss.

Scott Kelly will be the first American to spend nearly one year in space aboard the International Space Station, twice the normal time. One year is a stepping stone to a three-year journey to Mars, should that ever happen, so researchers are eager to learn if existing solutions will be suitable for long, onerous journeys.

Research published today details the first-ever successful elimination of a fatal chytrid fungus in a wild amphibian, marking a major breakthrough in the fight against the disease responsible for devastating amphibian populations worldwide. The highly-infectious chytrid pathogen has severely affected over 700 amphibian species worldwide; driving population declines, extirpations and species extinctions across five continents.

When I was an elementary school student, schools in my hometown administered IQ tests every couple of years. I felt very scared of the psychologist who came in to give those tests.

I also performed terribly. As a result, at one point, I was moved to a lower-grade classroom so I could take a test more suitable to my IQ level.

Consequently, I believed that my teachers considered me stupid. I, of course, thought I was stupid. In addition, I also thought my teachers expected low-quality work from a child of such low IQ. So, I gave them what they expected.

Researchers have discovered several new species of marine fungi inhabiting previously undescribed branches of the tree of life. Though there is always talk about what little we do know going extinct, little is known about species on land, now or in the past, much less about the fungi flourishing in the world's oceans.

It turns out that many marine fungi are very different from those found on land.

The research, published in Proceedings of the Royal Society B, used large-scale DNA sequencing to describe the diversity of fungal microbes in a wide range of marine environments.

Highlights

• An increase in serum phosphorus levels in African Americans with chronic kidney disease (CKD) is associated with faster progression to kidney failure, known as end-stage renal disease (ESRD).
• The study confirmed in African Americans what previous studies in Caucasians demonstrated, that an increase in the biomarker predicted ESRD risk.
• The research, from the Indiana University School of Medicine, was presented at ASN Kidney Week 2015 November 3-8 at the San Diego Convention Center in San Diego, CA.