Phys.org - latest science and technology news stories
Levitation yields better neutron-lifetime measurement
Being repulsive can have its advantages. In the case of an experiment at Los Alamos National Laboratory's linear accelerator, a repulsive magnetic field and a clever detector system are allowing ultracold neutrons to be levitated so their actual lifetimes can be more accurately measured. For the first time, the measurements are considered accurate enough that potential corrections are not larger than the uncertainties.
Genetic clues reveal origins of killer fungus behind the 'amphibian plague'
A deadly fungus responsible for the devastation of amphibian populations around the world may have originated in East Asia, new research has found.
Big fish produce disproportionately more and bigger eggs
What difference does it make whether an angler catches one big fish or two smaller fish, each half its weight? Experts assumed that big and small fish invest the same proportion of their energy to make eggs. But a new report in Science by a Smithsonian biologist and colleagues shows that plus-sized females invest disproportionately more in the number of eggs and the size of individual eggs. Therefore, taking a single big fish has a bigger impact on the fish population than taking multiple small ones.
Radar reveals details of mountain collapse after North Korea's most recent nuclear test
As North Korea's president pledges to "denuclearize" the Korean peninsula, an international team of scientists is publishing the most detailed view yet of the site of the country's latest and largest underground nuclear test on Sept. 3, 2017.
DNA study reveals previously unknown diversity of leprosy strains in Medieval Europe
New research by an international team of collaborators has revealed that there was much more diversity in the leprosy strains circulating in Medieval Europe than previously thought. This finding, based on the sequencing of 10 new ancient genomes from the leprosy-causing bacterium Mycobacterium leprae, complicates prior assumptions about the origin and spread of the disease, and also includes the oldest M. leprae genome sequenced to date, from about 400 AD in the United Kingdom.
Food-carrying ants use collective problem solving to get through or around obstacles
Ants working together to carry a large piece of food get around obstacles by switching between two types of motion: one that favors squeezing the morsel through a hole and another to seek a path around the barrier. Jonathan Ron of the Weizmann Institute, Israel, and colleagues present these findings in PLOS Computational Biology.
Source: https://phys.org/
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