Making U.S. Fire Departments More Diverse and Inclusive Ninety-six percent of U.S. career firefighters are men and 82% are white. What’s the path for departments achieving more diversity? And if they do so, will their members embrace how it improves their organization? Research and interviews with department leaders finds that, while outreach to minority candidates and affinity groups can help, true diversity will only come when department leaders embrace inclusion. This comes from understanding and rewarding the skills successful firefighters need that go beyond physical strength, a stereotypically masculine trait — they also need intellectual, social, and emotional skills required to deliver medical emergency aid, support each other through traumatic experiences, and engage intimately with the communities they serve. Continued here |
Durban coastline: sewage polluted beaches pose threat to holiday makers and the environment Large numbers of businesses in eThekwini on South Africa’s eastern seaboard – which includes the port city of Durban – rely heavily on tourism. It’s a popular holiday destination, only six hours by road from Johannesburg. Millions of people living inland head to the warm coastline over the country’s extended December/January school holiday break. But maybe not this year. As Anja du Plessis explains, many of the beaches along the Durban coastline aren’t safe to swim in. She explains what’s happened, and why. The city’s beaches are facing an ongoing sewage crisis. Many have been closed along the Durban coastline. Continued here |
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Gigaelectronvolt emission from a compact binary merger - Nature Nature volume 612, pages 236-239 (2022)Cite this article An energetic γ-ray burst (GRB), GRB 211211A, was observed on 11 December 20211,2. Despite its long duration, typically associated with bursts produced by the collapse of massive stars, the observation of an optical-infrared kilonova points to a compact binary merger origin3. Here we report observations of a significant (more than five sigma) transient-like emission in the high-energy γ-rays of GRB 211211A (more than 0.1 gigaelectronvolts) starting 103 seconds after the burst. After an initial phase with a roughly constant flux (about 5 × 10−10 erg per second per square centimetre) lasting about 2 × 104 seconds, the flux started decreasing and soon went undetected. Our detailed modelling of public and dedicated multi-wavelength observations demonstrates that gigaelectronvolt emission from GRB 211211A is in excess with respect to the flux predicted by the state-of-the-art afterglow model at such late time. We explore the possibility that the gigaelectronvolt excess is inverse Compton emission owing to the interaction of a late-time, low-power jet with an external source of photons, and find that kilonova emission can provide the seed photons. Our results open perspectives for observing binary neutron star mergers. Continued here |
A signalling pathway for transcriptional regulation of sleep amount in mice - Nature Nature (2022)Cite this article In mice and humans, sleep quantity is governed by genetic factors and exhibits age-dependent variation1,2,3. However, the core molecular pathways and effector mechanisms that regulate sleep duration in mammals remain unclear. Here, we characterize a major signalling pathway for the transcriptional regulation of sleep in mice using adeno-associated virus-mediated somatic genetics analysis4. Chimeric knockout of LKB1 kinase—an activator of AMPK-related protein kinase SIK35,6,7—in adult mouse brain markedly reduces the amount and delta power—a measure of sleep depth—of non-rapid eye movement sleep (NREMS). Downstream of the LKB1-SIK3 pathway, gain or loss-of-function of the histone deacetylases HDAC4 and HDAC5 in adult brain neurons causes bidirectional changes of NREMS amount and delta power. Moreover, phosphorylation of HDAC4 and HDAC5 is associated with increased sleep need, and HDAC4 specifically regulates NREMS amount in posterior hypothalamus. Genetic and transcriptomic studies reveal that HDAC4 cooperates with CREB in both transcriptional and sleep regulation. These findings introduce the concept of signalling pathways targeting transcription modulators to regulate daily sleep amount and demonstrate the power of somatic genetics in mouse sleep research. Continued here |
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If humans survive for a million years, this is what the world might look like Most species are transitory. They go extinct, branch into new species, or change over time due to random mutations and environmental shifts. A typical mammalian species can be expected to exist for a million years. Modern humans, Homo sapiens, have been around for roughly 300,000 years. So what will happen if we make it to a million years? Science fiction author H.G. Wells was the first to realize that humans could evolve into something very alien. In his 1883 essay, “The Man of the Year Million,” he envisioned what's now become a cliche: big-brained, tiny-bodied creatures. Later, he speculated that humans could also split into two or more new species. Continued here |
Australia announces 'Magnitsky' sanctions against targets in Russia and Iran. What are they and will they work? Foreign Affairs Minister Penny Wong chose Human Rights Day to announce Magnitsky-style sanctions against 13 Russian and Iranian individuals and two entities, in response to egregious human rights abuses. Wong has described these sanctions as a means of holding human rights abusers to account, in situations where dialogue has proven ineffective. Continued here |
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The institutions forging the strongest innovation links The 2022 Nature Index Innovation supplement ranks the top 500 institutions in the Nature Index by a normalized metric on patent influence. The first three charts here show the top institutions in three sectors on this metric. The last chart shows the leading academic–corporate collaborations in the Nature Index. Academic institutions with the highest score for patent influence tend to be universities specializing in certain areas of science, such as The Rockefeller University in the United States, which focuses mainly on the medical and biological sciences. Continued here |
40 years ago, one woman changed the video game industry forever Innovation is rare. Making the attempt is not. Just look at electric cars, Indian food, and the Power Glove to see how our efforts to innovate don't always pan out the way we’d expect. Conversely, sometimes innovation happens organically. This was the case 40 years ago when Activision’s Carol Shaw changed gaming forever. River Raid for the Atari 2600 doesn't look like much these days (what does after 40 years?). But it was a million-selling success for one of the first women in game development and made top-down shooters into a genre of their own. How? An astonishing amount of programming skill crammed into a 4KB game that offered endless hours of entertainment. Continued here |
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Elon Musk Sent an Email to Employees. It's a Masterclass In How Not to Motivate Your Team This is not how you get people to do what you want. Continued here |
How new tools like DALL-E could spread misinformation online Type “teddy bears working on new AI research on the moon in the 1980s” into any of the recently released text-to-image artificial intelligence image generators, and after just a few seconds, the sophisticated software will produce an eerily pertinent image. Seemingly bound by only your imagination, this latest trend in synthetic media has delighted many, inspired others, and struck fear in some. Continued here |
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Genetic diversity fuels gene discovery for tobacco and alcohol use - Nature Carousel with three slides shown at a time. Use the Previous and Next buttons to navigate three slides at a time, or the slide dot buttons at the end to jump three slides at a time. Nature (2022)Cite this article Continued here |
Mosquito meals and mysterious ant ‘milk’ Blood from a mosquito’s most recent meal contains antibodies from the person or animal the insect feasted on.Credit: Claude Nuridsany & Marie Perennou/SPL Blood-sucking mosquitoes have their uses. An innovative approach that analyses their last blood meals can reveal evidence of infection in the people or animals that the flying insects feasted on. Continued here |
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Oldest DNA reveals 2-million-year-old ecosystem DNA recovered from ancient permafrost has been used to reconstruct what an ecosystem might have looked like two million years ago. Their work suggests that Northern Greenland was much warmer than the frozen desert it is today, with a rich ecosystem of plants and animals. Why low levels of ‘good’ cholesterol don’t predict heart disease risk in Black people, and how firework displays affect the flights of geese. Continued here |
A kilonova following a long-duration gamma-ray burst at 350 Mpc - Nature Nature volume 612, pages 223-227 (2022)Cite this article Gamma-ray bursts (GRBs) are divided into two populations1,2; long GRBs that derive from the core collapse of massive stars (for example, ref. 3) and short GRBs that form in the merger of two compact objects4,5. Although it is common to divide the two populations at a gamma-ray duration of 2 s, classification based on duration does not always map to the progenitor. Notably, GRBs with short (≲2 s) spikes of prompt gamma-ray emission followed by prolonged, spectrally softer extended emission (EE-SGRBs) have been suggested to arise from compact object mergers6,7,8. Compact object mergers are of great astrophysical importance as the only confirmed site of rapid neutron capture (r-process) nucleosynthesis, observed in the form of so-called kilonovae9,10,11,12,13,14. Here we report the discovery of a possible kilonova associated with the nearby (350 Mpc), minute-duration GRB 211211A. The kilonova implies that the progenitor is a compact object merger, suggesting that GRBs with long, complex light curves can be spawned from merger events. The kilonova of GRB 211211A has a similar luminosity, duration and colour to that which accompanied the gravitational wave (GW)-detected binary neutron star (BNS) merger GW170817 (ref. 4). Further searches for GW signals coincident with long GRBs are a promising route for future multi-messenger astronomy. Continued here |
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Edward Lewis: Essence Magazine ^ 318115 Essence, the first magazine aimed at African-American women, was created by four, young, Black entrepreneurs in the aftermath of massive racial and political upheaval in the United States in 1968. The venture was a financial, branding and cultural success. By 2005, the company was sold to Time Warner, Inc, the largest magazine publisher in the world at that time, for the highest price ever paid for a single-title magazine company. However, there is still debate about whether the last remaining co-founder, Edward Lewis, jeopardized the iconic Black brand by selling it to a white-owned company. Continued here |
Author Correction: Decade-long leukaemia remissions with persistence of CD4+ CAR T cells - Nature Nature (2022)Cite this article Correction to: Nature https://doi.org/10.1038/s41586-021-04390-6 Published online 2 February 2022 Continued here |
The sneaky economics of Ticketmaster It was the type of disaster that made Americans reconsider the concept of live music sales. An iconic female artist, whose popular love songs delighted multiple generations, announced a national tour for the first time in many years. Countless fans cleared their schedules to buy tickets the moment they went on sale. Continued here |
Can the world save a million species from extinction? Indonesia’s bleeding toad (Leptophryne cruentata) is critically endangered.Credit: Pepew Fegley/Shutterstock One-quarter of all plant and animal species are threatened with extinction owing to factors such as climate change and pollution. Starting this week, negotiators and ministers from more than 190 countries are meeting at a United Nations biodiversity summit called COP15 in Montreal, Canada, to address the emergency. Continued here |
The Indonesia Strategy Case: Confidential Instructions for Joanna ^ INS978 This is a multi-issue one-on-one internal negotiation between a recently promoted boss, Joanna, and an older-than-her employee, Rupert, who is disgruntled at having been passed over for promotion. Joanna needs his advice to design the new strategy for the Indonesia operations, which she must present to the board soon. Continued here |
Should Local Police Departments Deploy Lethal Robots? Last month, the San Francisco Board of Supervisors voted in favor of allowing that city’s police department to deploy robots equipped with a potential to kill, should a situation—in the estimation of police officers—call for lethal force. With that decision, the board appeared to have delivered the city to a dystopian future. The vote garnered a loudly negative response from the public, and this week the supervisors reversed course and sent the policy back to committee. But the fact that the decision initially passed—and may yet pass in some form—should not have been surprising. Police departments around the country have been acquiring robotic devices for decades. Most are used for what have become routine policing activities, such as surveillance and bomb disposal. But some can be outfitted with other capabilities, such as to fire 12-gauge shotgun rounds, and in Dallas, in 2016, the police used a bomb-disposal robot to detonate an explosive device, in order to kill a suspected sniper who had shot twelve officers, killing five. The San Francisco Police Department has seventeen robots, twelve of which are functional, and among that number are bomb-disposal units that can be repurposed to deliver an explosive device. (They, too, can be outfitted to fire 12-gauge rounds.) Since 1997, when the National Defense Authorization Act sanctioned the transfer of surplus Department of Defense matériel to local police departments, ostensibly to shore up their defenses for the war on drugs, law-enforcement agencies around the country have been stockpiling the weapons and equipment of war. An earlier program that enabled police departments to buy military surplus at a discounted rate was given a boost after 9/11, when grants from the Department of Homeland Security enabled local forces to purchase armored personnel carriers, tactical gear, sound cannons, drones, and other accoutrements of modern warfare. According to the Law Enforcement Support Office, which oversees the weapon transfers, more than seven billion dollars’ worth of equipment has been transferred to more than eight thousand police departments since the program began. Continued here |
5 Must-Read Football (or Soccer) Stories
All eyes are on the World Cup matches in Qatar, but we’re here to remind you that soccer (or football, if you prefer) is a world that transcends the pitch. From the story of an openly gay Brazilian referee who became an icon on and off the field, to the tales of the archaeologists who are hunting for the origins of the modern game, here are some of our favorite Atlas Obscura stories about the beautiful game. Porto Alegre has two soccer teams—Sport Club Internacional and Grêmio Foot-Ball Porto Alegrense—and one of the best-known rivalries in Brazilian sports. So when a bridge built near Inter’s stadium appeared to celebrate the team’s crushing defeat in the 2010 Club World Cup, the conspiracy theories emerged. Was a Grêmio fan behind it? Continued here
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