Chocolate muddles cannabis potency testing In 2012, Washington and Colorado became the first states to legalize recreational marijuana. Since then, several other states have joined them, and cannabis-infused edibles, including gummy bears, cookies and chocolates, have flooded the market. But these sweet treats have created major headaches for the scientists trying to analyze them for potency and contaminants. Researchers now report that components in chocolate might be interfering with cannabis potency testing, leading to inaccurate results.
What's Mars solar conjunction, and why does it matter? The daily chatter between antennas here on Earth and those on NASA spacecraft at Mars is about to get much quieter for a few weeks.
A novel technology for genome-editing a broad range of mutations in live organisms The ability to edit genes in living organisms offers the opportunity to treat a plethora of inherited diseases. However, many types of gene-editing tools are unable to target critical areas of DNA, and creating such a technology has been difficult as living tissue contains diverse types of cells.
Migrating mule deer don't need directions: study How do big-game animals know where to migrate across hundreds of miles of vast Wyoming landscapes year after year?
Bioprinting complex living tissue in just a few seconds Tissue engineers create artificial organs and tissues that can be used to develop and test new drugs, repair damaged tissue and even replace entire organs in the human body. However, current fabrication methods limit their ability to produce free-form shapes and achieve high cell viability.
Breath! Respiring microbes generate more energy How do cells generate and use energy? This question might seem simple, but the answer is far from simple. Furthermore, knowing how microbial cell factories consume energy and how proteins are allocated to do so is crucial when working with industrial fermentations.
Focus: X-Ray Imaging Goes Quantum
Author(s): Matteo Rini
The first demonstration of a source of quantum correlated x-ray photons shows that such photons can enhance x-ray imaging.
[Physics 12, 95] Published Fri Aug 23, 2019
Gravitational waves could settle mystery of the universe's expansion Supernovae and the big bang's afterglow give us conflicting numbers on how fast the universe is expanding. Gravitational waves could help settle things
Synopsis: A Heat Engine Made of a Single Ion Spin
By converting electron spin into ion motion, researchers build a simple heat engine out of a single calcium ion.
[Physics] Published Thu Aug 22, 2019
Viewpoint: A Ferroelastic Film at the Edge of Chaos
Author(s): Pol Lloveras
Period doubling—a behavior seen in systems that are nearing a chaotic regime—shows up in the microstructure of a strain-textured material.
[Physics 12, 94] Published Thu Aug 22, 2019
LIGO may have seen its first black hole and neutron star collision LIGO has probably seen the collision of a black hole and neutron star. That would mean it has spotted all three types of cosmic event it was designed to
Quantum teleportation used to send 3D information for the first time Quantum teleportation has only ever been performed with qubits, which have two dimensions. Now it’s been done with a 3D qutrit for the first time
Synopsis: Quantum Interference Across an Astronomical Distance
Researchers witness quantum interference and entanglement between photons from sources 150 million km apart—the Sun and a quantum dot in their lab.
[Physics] Published Wed Aug 21, 2019
Quantum weirdness isn't real – we've just got space and time all wrong A radical new idea erases quantum theory's weird uncertainties – by ripping up all we thought we knew about how the universe works, says physicist Lee Smolin
Synopsis: Toward Topological Protection with Qubits
A chain of superconducting qubits reproduces two key features of topological insulators.
[Physics] Published Tue Aug 20, 2019
A classic quantum theorem may prove there are many parallel universes If we accept that information can’t travel faster than the speed of light, a quantum theorem seems to require many worlds that split when you make a measurement
Viewpoint: Questioning a Universal Law for Electron Attenuation
Author(s): Wolfgang S. M. Werner
A law describing electron attenuation in solids has long helped researchers determine the size of nanoscale objects, but experiments show that it is less general than previously thought.
[Physics 12, 93] Published Mon Aug 19, 2019
Focus: Friction, Not Inertia, Controls Avalanches
Author(s): Peter Weiss
By tuning the friction between tiny beads suspended in water, researchers gain new understanding of how avalanches begin.
[Physics 12, 92] Published Fri Aug 16, 2019
What if there was no big bang and we live in an ever-cycling universe? There is no good evidence that our universe even had a beginning, a startling proposition that means the cosmos could collapse in about 100 billion years
Military-grade jet fuel made cheaply from plant waste instead of coal An expensive superfuel normally reserved for missiles and hypersonic jets can now be made from crop waste instead of fossil fuels - and more cheaply to boot
Physicists beat Lorentz reciprocity for microwave transmission New device could boost telecommunications and be adapted for photonics
Japan’s SuperKEKB set for first particle collisions Revamped accelerator will soon be smashing electrons and positrons together
Wood-based 'supermaterial' is stronger and tougher than steel New material is made by compressing treated wood
Three photons bind together to make a ‘molecule’ of light Technique could be used to create quantum-information systems
Nuclear excitation by electron capture seen at long last Breakthrough could lead to new type of energy source
Pistachio trees 'talk' to their neighbours, reveals statistical physics Ising model could account for nut production of pistachio orchards
US National Science Foundation clamps down on misconduct Agency will now require every grantee organization to report cases of sexual harassment