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A new Earth bombardment model

21/10/2021
A team has updated its asteroid bombardment model of the Earth with the latest geologic evidence of ancient, large collisions. These models have been used to understand how impacts may have affected oxygen levels in the Earth's atmosphere in the Archean eon, 2.5 to 4 billion years ago.

Some of the world’s oldest rubies linked to early life

21/10/2021
While analyzing some of the world's oldest colored gemstones, researchers discovered carbon residue that was once ancient life, encased in a 2.5 billion-year-old ruby.

New galaxy images reveal a fitful start to the Universe

21/10/2021
New images have revealed detailed clues about how the first stars and structures were formed in the Universe and suggest the formation of the Galaxy got off to a fitful start.

African grey parrots may have better self-control than macaws

21/10/2021
African grey parrots may be better able than macaws to delay gratification -- rejecting an immediate reward in favour of a better one in the future -- according to a new study.

Pilot study explores neural mechanisms of balance dysfunction after traumatic brain injury

21/10/2021
Researchers examine graph-theoretical properties of brain networks in traumatic brain injury and controls and their association with balance impairment and structural damage.

Rise of the war machines: Identifying key drivers of the evolution of military technology in pre-industrial societies

21/10/2021
A new analysis spanning 10,000 years of history and ten major world regions has identified world population size, major technological advances, and geographical connectivity as key drivers of the evolution of military technology prior to the Industrial Revolution.

Red blood cells play much larger role in immune system through discovery of DNA-binding capability, study finds

21/10/2021
Researchers uncover the mechanism of how red blood cells detect and bind DNA, opening the door to a new area of research for the treatment of inflammatory diseases.

First dinosaur era crab fully preserved in amber discovered

21/10/2021
Researchers describe the first crab from the Cretaceous dinosaur era preserved in amber. The study used micro CT to examine and describe Cretapsara athanata, the oldest modern-looking crab (approximately 100 million years old) and the most complete fossil crab ever discovered.

Changing ocean currents are driving extreme winter weather

20/10/2021
Slower ocean circulation as the result of climate change could intensify extreme cold weather in the U.S., according to new research.

How an enriched environment fires up our synapses

20/10/2021
Processing of sensory impressions and information depends very much on how the synapses in our brain work. A team has now shown how lipid and protein regulation impact brain's processing of a beautiful and stimulating environment. The lipids located in the membranes of the synapses are central to signal transmission, the researchers report.

Scientists enable a blind woman to see simple shapes

20/10/2021
Newly published research details how a team of scientists successfully created a form of artificial vision for a blind woman using a brain implant.

Savannah chimpanzees, a model for the understanding of human evolution

20/10/2021
To prosper, most great apes need lush forests in Africa (bonobos, chimpanzees, and gorillas) or Southeast Asia (orangutans), except for some groups of chimpanzees that live in Savannahs, habitats characterized by high temperatures and very low seasonal rainfall.

Termite brains can grow in anticipation of a single moment of flight and light

20/10/2021
In a dampwood termite colony only a select few will, quite literally, see the light. The insects are unique due to their mating flights and the adaptability of their role within the colony, which is based on the overall needs of the group. King and queen termites must leave the nest and are the only members to go outside -- briefly --to partner off and tunnel into a new location to start another colony. Researchers investigated how this group of individuals, who are destined to leave the nest, evolve differently in the brain region that processes vision.

Quantum material to boost terahertz frequencies

20/10/2021
They are regarded as one of the most interesting materials for future electronics: Topological insulators conduct electricity in a special way and hold the promise of novel circuits and faster mobile communications. A research team has now unraveled a fundamental property of this new class of materials: How exactly do the electrons in the material respond when they are 'startled' by short pulses of so-called terahertz radiation? The results are not just significant for our basic understanding of this novel quantum material, but could herald faster mobile data communication or high-sensitivity detector systems for exploring distant worlds in years to come, the team reports.

Researchers make hardened wooden knives that slice through steak

20/10/2021
The sharpest knives available are made of either steel or ceramic, both of which are human-made materials that must be forged in furnaces under extreme temperatures. Now, researchers have developed a potentially more sustainable way to make sharp knives: using hardened wood. The method makes wood 23 times harder and a knife made from the material is nearly three times sharper than a stainless-steel dinner table knife.

Study of DNA repair boosts prospects for gene editing technology

20/10/2021
Researchers have developed a new method to profile the activity of cellular genes involved in correcting DNA damage, and applied this method to pave the way for dramatic improvements to genome editing technologies.

Europeans in the Americas 1000 years ago

20/10/2021
The Vikings were active in North America in the year 1021 AD. This now represents the earliest -- and only -- known year in which Europeans were present in the Americas prior to the arrival of Columbus in 1492 AD. It also represents a definitive point in time by which the Atlantic Ocean had been traversed and human migration had finally encircled the globe.

Origin of domestic horses finally established

20/10/2021
The modern horse was domesticated around 2200 years BCE in the northern Caucasus. In the centuries that followed it spread throughout Asia and Europe. An international team of 162 scientists collected, sequenced and compared 273 genomes from ancient horses scattered across Eurasia to come up with this finding.

Hit the sleep ‘sweet spot’ to keep brain sharp

20/10/2021
Older adults who sleep short or long experienced greater cognitive decline than those who sleep a moderate amount, even when the effects of early Alzheimer's disease were taken into account, according to a new study.

Astronomers detect signs of an atmosphere stripped from a planet in a giant impact

20/10/2021
A team has discovered evidence of a giant impact in the nearby HD 17255 star system, in which an Earth-sized terrestrial planet and a smaller impactor likely collided at least 200,000 years ago, stripping off part of one planet's atmosphere.

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