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137,235 articles from ScienceDaily

Reactivating aging stem cells in the brain

As people get older, their neural stem cells lose the ability to proliferate and produce new neurons, leading to a decline in memory function. Researchers have now discovered a mechanism linked to stem cell aging - and how the production of neurons can be reactivated.

From melody to language

In the process of developing language, the melody patterns that emerge in infants' vocalizations are a very important first step. A new study has shown that the complexity of these patterns rapidly increases in the first months.

New study suggests supermassive black holes could form from dark matter

A new theoretical study has proposed a novel mechanism for the creation of supermassive black holes from dark matter. The international team find that rather than the conventional formation scenarios involving 'normal' matter, supermassive black holes could instead form directly from dark matter in high density regions in the centres of galaxies. The result has key implications for cosmology in...

A space-time crystal

A research team has succeeded in creating a micrometer-sized space-time crystal consisting of magnons at room temperature. With the help of a scanning transmission X-ray microscope, they were able to film the recurring periodic magnetization structure in a crystal.

Fighting fit cockroaches have 'hidden strength'

A new study has discovered that not all cockroaches are equal and 'super athletes' are more likely to win physical mating battles. The researchers scored aggressive interactions and carried out CT-scans. They found that dominant males have larger respiratory systems than submissive males of an identical size. The increased ability to deliver oxygen to their body tissue may enhance the fighting...

How did dogs get to the Americas? An ancient bone fragment holds clues

Researchers analyzed the dog's mitochondrial genome, and concluded that the animal belonged to a lineage of dogs whose evolutionary history diverged from that of Siberian dogs as early as 16,700 years ago. The timing of that split coincides with a period when humans may have been migrating into North America along a coastal route that included Southeast Alaska.


Reclusive neutron star may have been found in famous supernova

Since astronomers captured the bright explosion of a star on February 24, 1987, researchers have been searching for the squashed stellar core that should have been left behind. A group of astronomers using data from NASA space missions and ground-based telescopes may have finally found it.

Agile underwater glider could quietly survey the seas

Autonomous underwater vehicles have become versatile tools for exploring the seas. But they can be disruptive to the environment or have trouble traveling through confined spaces. Researchers are studying an alternative: highly maneuverable, low-cost underwater gliders that operate silently.

Study sheds light on unique social character of forest elephants

A new study offers rare insights into the unique social character of forest elephants, the least understood of the world's three currently existing elephant species. Limited access to food in the central African forest probably affects why females of this species form smaller family units than other elephants.

Parasitic plants conspire to keep hosts alive

The plant that encourages kissing at Christmas is in fact a parasite, and new research reveals mistletoe has an unusual feeding strategy. When two mistletoes invade the same tree, they increase photosynthesis to get the nutrients they need, essentially sharing the tree and causing it less harm.