Video: Why seashells are tougher than chalk
Seashells are made mostly of calcium carbonate, also known as chalk, a mineral soft and crumbly enough to use for sidewalk doodles.
Other
Jun 7, 2018
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07/06/2018
In a hole in a tunicate there lived a hobbit: New shrimp species named after Bilbo Baggins
Two new species of tiny symbiotic shrimps are described, illustrated and named by biology student at Leiden University Werner de Gier as part of his bachelor's research project, supervised by Dr. Charles H. J. M. Fransen, ...
Plants & Animals
Jun 7, 2018
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184
New model sheds light on key physics of magnetic islands that halt fusion reactions
Magnetic islands, bubble-like structures that form in fusion plasmas, can grow and disrupt the plasmas and damage the doughnut-shaped tokamak facilities that house fusion reactions. Recent research at the U.S. Department ...
Plasma Physics
Jun 7, 2018
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4
Drone forensics gets a boost with new data on NIST website
Aerial drones might someday deliver online purchases to your home. But in some prisons, drone delivery is already a thing. Drones have been spotted flying drugs, cell phones and other contraband over prison walls , and in ...
Engineering
Jun 7, 2018
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How to suck carbon dioxide from the sky for fuels and more
Someday, the gasoline you buy might trace its heritage to carbon dioxide pulled straight out of the sky rather than from oil pumped out of the ground. By removing emitted carbon dioxide from the atmosphere and turning it ...
Materials Science
Jun 7, 2018
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Study identifies cellular 'death code'
Dying cells generally have two options: go quietly, or go out with a bang.
Cell & Microbiology
Jun 7, 2018
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356
Structural protein found essential to X chromosome inactivation
A Massachusetts General Hospital (MGH) research team has identified the essential role of a structural protein in the silencing of the inactive X chromosome, a process that prevents both copies of the same gene from being ...
Cell & Microbiology
Jun 7, 2018
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59
Study of sleeping fur seals provides insight into the function of REM sleep
All land mammals and birds have two types of sleep: rapid eye movement (REM) and non-REM (also called slow-wave sleep). Earlier evidence had suggested that REM sleep—associated with dreaming—is essential for physical ...
Plants & Animals
Jun 7, 2018
0
90
In male dolphin alliances, 'everybody knows your name'
It's not uncommon in dolphin society for males to form long-lasting alliances with other males, sometimes for decades. Now, after studying bottlenose dolphins in Shark Bay, Australia, for more than 30 years, researchers reporting ...
Plants & Animals
Jun 7, 2018
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79
Australian lizard scares away predators with ultra-violet tongue
When attacked, bluetongue skinks open their mouth suddenly and as wide as possible to reveal their conspicuously coloured tongues. This surprise action serves as their last line of defence to save themselves from becoming ...
Ecology
Jun 7, 2018
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