In saliva, scientists have found hints that a 'ghost' species of archaic humans may have contributed genetic material to ancestors of people living in sub-Saharan Africa today. The research adds to a growing body of evidence suggesting that sexual rendezvous between different archaic human species may not have been unusual.

Researchers have applied advanced scanning methods to visualize the previously unexplored surface of a superconductor: lithium titanate.

New and improved rescue robots tough enough to function in extreme and hostile environments were unveiled recently at a demonstration at Tohoku University, Japan.

Seagrass meadows in Johor harbor have three times more juvenile fish than coral reefs, scientists have found. They also found that the dugong herds there prefer certain types of meadows over others.

Extravert Chinese students learning English as a second language are likely to perform better in speaking and reading, but less proficient in listening than their introvert counterparts, according to a study.

With the introduction of the Cornell-Brookhaven ERL Test Accelerator, scientists are following up on the concept of energy-recovering particle accelerators first introduced by physicist Maury Tigner at Cornell more than 50 years ago.

In the lead-up to a total solar eclipse, most of the attention is on the sun, but Earth's moon also has a starring role.

A study of the 100 most-cited neuroscience articles has revealed that 78 of these papers cover five topics, including neurological disorders, the prefrontal cortex, brain connectivity, brain mapping and methodology studies.

Having a sugar-sweetened drink with a high-protein meal may negatively affect energy balance, alter food preferences and cause the body to store more fat.

A web that passes through infinite intergalactic spaces, a dense cosmic forest illuminated by very distant lights and a huge enigma to solve. These are the picturesque ingredients of a scientific research that adds an important element for understanding one of the fundamental components of our Universe: dark matter.

Researchers have developed a method to increase by a factor of five the computing power of a standard algorithm when performed in one type of standard chip, FPGA. The new method is both simple and smart, but the road to publication has been long.

By means of precision measurements on a single proton, scientists have been able to improve the precision of the measurement of the mass of the proton by a factor of three and also corrected the existing value, finding it is significantly lighter than previously believed.

Small mountain glaciers play a big role in recharging vital aquifers and in keeping rivers flowing during the winter, according to a new study. The study also suggests that the accelerated melting of mountain glaciers in recent decades may explain a phenomenon that has long puzzled scientists -- why Arctic and sub-Arctic rivers have increased their water flow during the winter even without a correlative increase in rain or snowfall.

Citizen science has revealed the spread of the invasive giant slug Limax maximus and its potential native predator in Japan, providing new insights into predator-prey dynamics between introduced prey and native predators.

Neurobiologists present a new theory for the origin of the grid cells required for spatial orientation in the mammalian brain, which assigns a vital role to the timing of trains of signals they receive from neurons called place cells.