“It’s usually the diesel engine that’s worn out, not the rest of the truck,” he said, “so, instead of spending money on the rebuild, they can convert their trucks.”
Batteries can be swapped in three minutes, removing the need for trucks to plug in and charge.
Scan the World might be one of the only institutions where visitors are encouraged to handle the most-valued sculptures and artifacts from art history. The open-source museum hosts an impressive archive of 18000 digital scans—the eclectic collection spans artworks like the “Bust of Nefertiti,” the “Fourth Gate of Vaubam Fortress,” and Michaelangelo’s “David” in addition to other items like chimpanzee skulls—that are available for download and 3D printing in a matter of hours.
A federal appeals court on Thursday said the Environmental Protection Agency (EPA) must ban a pesticide linked to developmental issues in children within 60 days unless it can find a safe use for the chemical.
The 9th Circuit ruled that the evidence compiled by the EPA fails to show that the substance chlorpyrifos is not harmful. Studies have linked exposure to chlorpyrifos to lower IQ, impaired working memory and negative impacts on motor development.
“The EPA has spent more than a decade assembling a record of chlorpyrifos’s ill effects and has repeatedly determined, based on that record, that it cannot conclude, to the statutorily required standard of reasonable certainty, that the present tolerances are causing no harm,” wrote Judge Jed Rakoff, a Clinton appointee, in the majority opinion. He was joined by Judge Jacqueline Nguyen, an Obama appointee.
A team of researchers from Universidade Estadual Paulista, Universidade Federal do Mato Grosso do Sul and Projeto Dacnis, São Francisco Xavier and Ubatuba has discovered a new species of pumpkin toadlet. In their paper published on the open-access site PLOS ONE, the group describes their study of pumpkin toadlets in Brazil, how they found the new species and what sets it apart from other pumpkin toadlets.
Pumpkin toadlets are a group of related species of bright orange amphibians. They look like tiny frogs, and most are small enough to sit on a thumbnail—many of them are also poisonous. In this new effort, the researchers were studying pumpkin toadlets living in a heavily forested part of Brazil, just south of the Mantiqueira mountains, along its eastern coast—in the state of São Paulo. To date, several species have been identified. To learn more about them, the researchers traveled to the area multiple times between late 2017 and late 2019, collecting samples. The collecting was made easier through the use of a fluorescent light—some of the bones of the tiny creatures light up right through the skin. In all, the team collected 276 specimens which they took back to their lab for study. Each was given a DNA test to identify its species.
Nuclear physicists make new, high-precision measurement of the layer of neutrons that encompass the lead nucleus, revealing new information about neutron stars.
Nuclear physicists have made a new, highly accurate measurement of the thickness of the neutron “skin” that encompasses the lead nucleus in experiments conducted at the U.S. Department of Energy’s Thomas Jefferson National Accelerator Facility and just published in Physical Review Letters. The result, which revealed a neutron skin thickness of .28 millionths of a nanometer, has important implications for the structure and size of neutron stars.
The protons and neutrons that form the nucleus at the heart of every atom in the universe help determine each atom’s identity and properties. Nuclear physicists are studying different nuclei to learn more about how these protons and neutrons act inside the nucleus. The Lead Radius Experiment collaboration, called PREx (after the chemical symbol for lead, Pb), is studying the fine details of how protons and neutrons are distributed in lead nuclei.
Voyager 2 joined Voyager 1 outside the heliosphere one year ago. Now, five new papers reveal what it has found out there.
Only two of humanity’s spacecraft have left the Solar System: NASA’s Voyager 1 and Voyager 2. Voyager 1 left the heliosphere behind in 2012, while Voyager 2 did the same on Nov. 5th, 2018. Now Voyager 2 has been in interstellar space for one year, and five new papers are presenting the scientific results from that one year.
The heliosphere is a bubble-shaped region of space with our Sun in the center. Think of it as an inflated cavity full of plasma that comes from the Sun. The edge of the bubble is where the plasma from our Sun gives way to the interstellar medium (ISM.) Voyager 2 left the heliosphere behind and entered interstellar space at about 18 billion km (11 billion miles) from Earth.
Continue reading “What Voyager 2 Learned After Spending a Year in Interstellar Space” »
Circa 2020 o.o!
Researchers have succeeded in creating an efficient quantum-mechanical light-matter interface using a microscopic cavity. Within this cavity, a single photon is emitted and absorbed up to 10 times by an artificial atom. This opens up new prospects for quantum technology, report physicists at the University of Basel and Ruhr-University Bochum in the journal Nature.
Quantum physics describes photons as light particles. Achieving an interaction between a single photon and a single atom is a huge challenge due to the tiny size of the atom. However, sending the photon past the atom several times by means of mirrors significantly increases the probability of an interaction.
Lauded for years as the system able to best prevent malware infection, macOS recently fell victim to an operating system vulnerability that hackers used to circumvent all of Apple’s system defenses.
Security researcher Cedric Owens discovered this bug in March 2021 while assessing Apple’s Gatekeeper mechanism, a safeguard that will only allow developers to run their software on Macs after registering with Apple and paying a fee. Moreover, the company requires that all applications undergo an automated vetting process to further protect against malicious software.
Unfortunately, Owens uncovered a logic flaw in the macOS itself, rather than the defense systems. The bug allowed attackers to develop malware able to deceive the operating system into running their malware regardless of whether they passed Apple’s safety checks. Indeed, this flaw resembles a door that has been securely locked and bolted but still has a small pet door at the bottom through which you can break in or insert a bomb.
The field of soft robotics has exploded in the past decade, as ever more researchers seek to make real the potential of these pliant, flexible automata in a variety of realms, including search and rescue, exploration and medicine.
For all the excitement surrounding these new machines, however, UC Santa Barbara mechanical engineering professor Elliot Hawkes wants to ensure that soft robotics research is more than just a flash in the pan. “Some new, rapidly growing fields never take root, while others become thriving disciplines,” Hawkes said.
To help guarantee the longevity of soft robotics research, Hawkes, whose own robots have garnered interest for their bioinspired and novel locomotion and for the new possibilities they present, offers an approach that moves the field forward. His viewpoint, written with colleagues Carmel Majidi from Carnegie Mellon University and Michael T. Tolley of UC San Diego, is published in the journal Science Robotics.
Seattle-based company Jetoptera says its air-accelerating Fluidic Propulsive System, which works a lot like a Dyson “bladeless” fan, produces thrust for half the fuel of a small turbojet while being the “most silent propulsion system in the skies.”
