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How a city’s design creates congestion

Science Daily - Mié, 22/09/2021 - 15:19
City planners predict that as more people move into urban areas, traffic jams will get worse. That's why sustainability experts propose a new way to analyze traffic congestion. Using more precise measures to describe the shape of cities and considering other socioeconomic factors, the model, which was applied to nearly 100 American cities, could lead to a better understanding of the link between congestion and land use.

How do migraines affect the sleep cycle?

Science Daily - Mié, 22/09/2021 - 15:06
Adults and children with migraines may get less quality, REM sleep time than people who don't have migraines. That's according to a meta-analysis. Children with migraines were also found to get less total sleep time than their healthy peers but took less time to fall asleep.

Adults with neurologic conditions more likely to have experienced childhood trauma

Science Daily - Mié, 22/09/2021 - 15:06
Adults with neurologic conditions are more likely than the general population to have had adverse childhood experiences such as abuse, neglect or household dysfunction, according to a new study. The study does not prove that neurologic conditions are caused by such experiences. It only shows an association between the two.

Metals supercharge promising method to bury harmful carbon dioxide under the sea

Science Daily - Mié, 22/09/2021 - 14:58
Researchers have found a way to supercharge the formation of carbon dioxide-based crystal structures that could someday store billions of tons of carbon under the ocean floor for centuries, if not forever.

Birds flocked to North American cities during covid-19 lockdowns

New Scientist - Mié, 22/09/2021 - 14:00
Dozens of bird species became more abundant in 93 urban centres across the US and Canada when covid-19 restrictions cut noise and pollution from traffic

Dinosaurs may have waggled their tails to help walk more efficiently

New Scientist - Mié, 22/09/2021 - 14:00
A computer reconstruction of a small two-legged dinosaur suggests it ran more efficiently if it waggled its tail from side to side with every step

World's oldest identical twins are 107 years (and 300 days) old

Live Science - Mié, 22/09/2021 - 14:00
Guinness World Records certified the title this month.

Desert teamwork explains global pattern of co-operation in birds

Science Daily - Mié, 22/09/2021 - 13:33
A new study from the Kalahari Desert finds that teamwork allows birds to cope with brutally unpredictable environments.

Those earrings are so last year – but the reason you're wearing them is ancient

Science Daily - Mié, 22/09/2021 - 13:33
Shell beads found in a cave in Morocco are at least 142,000 years old. The archaeologists who found them say they're the earliest known evidence of a widespread form of human communication.

Researchers provide a framework to study precision nutrigeroscience

Science Daily - Mié, 22/09/2021 - 13:33
There are many forms of dietary restriction and their health benefits are not 'one size fits all.' Researchers provide a framework for a new personalized sub-specialty: precision nutrigeroscience, based on biomarkers affected by genetics, gender, tissue, and age.

Wind energy can deliver vital slash to global warming

Science Daily - Mié, 22/09/2021 - 13:33
Implementing advance wind energy scenarios could achieve a reduction in global warming atmospheric average temperatures of 0.3 to 0.8 degrees Celsius by the end of the century, according to new research.

Early Homo sapiens groups in Europe faced subarctic climates

Science Daily - Mié, 22/09/2021 - 13:32
Using oxygen stable isotope analysis of tooth enamel from animals butchered by humans at the site of Bacho Kiro Cave, Bulgaria, researchers show that human groups belonging to an early wave of dispersal of our species into Europe were faced with very cold climatic conditions while they occupied the cave between about 46,000 and 43,000 years ago. Archaeological remains at Bacho Kiro Cave currently represent the oldest known remnants of Upper Palaeolithic Homo sapiens in Europe, and thus open a unique window into the time when our species started to move out of the Levant and establish itself across the mid latitudes of Eurasia as part of an archaeological phenomenon called the Initial Upper Palaeolithic.

Researchers mimic how water and wind create complex shapes in nature

Science Daily - Mié, 22/09/2021 - 13:32
Researchers have found a way to mimic the natural processes that create complex shapes and landscapes with the help of a vibrating plate and resulting energy fields.

Continental growth is not a continuous process

Science Daily - Mié, 22/09/2021 - 13:32
The continents, a specific feature of our planet, still hold many secrets. Using chemical data on sedimentary rocks compiled from the scientific literature from the 1980s to the present day, researchers have uncovered a new geological history of the continents. The research shows that their growth was not a continuous process, and that they have always been rich in silica1. This new study calls into question certain models of the onset of plate tectonics and provides us with a better understanding of continental growth through time.

Some dinosaurs may have wagged their tails to help them run

Live Science - Mié, 22/09/2021 - 13:08
Small-armed, two-legged dinosaurs may have wagged their tails to help them run, for the same reason humans swing their arms, according to a new study.

How can we prevent and reduce food waste?

New Scientist - Mié, 22/09/2021 - 13:00
Around one third of all food produced globally goes to waste, the vast majority being thrown into landfill sites where it is left to rot away

New research 'sniffs out' how associative memories are formed

Science Daily - Mié, 22/09/2021 - 12:30
Has the scent of freshly baked chocolate chip cookies ever taken you back to afternoons at your grandmother's house? Has an old song ever brought back memories of a first date? The ability to remember relationships between unrelated items (an odor and a location, a song and an event) is known as associative memory.

Immune cells in the brain share the work

Science Daily - Mié, 22/09/2021 - 12:30
To break down toxic proteins more quickly, immune cells in the brain can join together to form networks when needed. However, in certain mutations that can cause Parkinson's disease, this cooperation is impaired.

Why covid-19 hospitalisations may soar in England despite vaccination

New Scientist - Mié, 22/09/2021 - 12:00
Modelling suggests covid-19 hospitalisations in England could soon be as high as 7000 a day, but that is only one of several different possible scenarios

Hubble finds early, massive galaxies running on empty

Science Daily - Mié, 22/09/2021 - 11:19
When the universe was about 3 billion years old, just 20% of its current age, it experienced the most prolific period of star birth in its history. But when NASA's Hubble Space Telescope and the Atacama Large Millimeter/submillimeter Array (ALMA) in northern Chile gazed toward cosmic objects in this period, they found something odd: six early, massive, 'dead' galaxies that had run out of the cold hydrogen gas needed to make stars. Without more fuel for star formation, these galaxies were literally running on empty.


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