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1. Ding, L., Saunders, T. L., Enikolopov, G. & Morrison, S. J. Endothelial and perivascular cells maintain haematopoietic stem cells. Nature 481, 457–462 (2012). ADS  CAS  PubMed  PubMed Central  Article  Google Scholar  2. Ding, L. & Morrison, S. J. Haematopoietic stem cells and early lymphoid progenitors occupy distinct bone marrow niches. Nature 495, 231–235 (2013).
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A shower of particles: A particle collision event display from the ATLAS detector at CERN’s Large Hadron collider in 2018. (Courtesy: ATLAS collaboration) Quantum theory is often portrayed as a disruptive force, complicating everything that classical physics seemed to have figured out. Now, however, physicists at Lawrence Berkeley National Laboratory (LBNL) in the US have
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President Joe Biden signed an executive order Wednesday meant to address a global chip shortage impacting industries ranging from medical supplies to electric vehicles. The order includes a 100-day review of key products including semiconductors and advanced batteries used in electric vehicles, followed by a broader, long-term review of six sectors of the economy. The
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In 2020, philanthropic donations by major donors saw an almost 7 percent increase on a year-to-date basis. As companies direct more of their money to external charitable causes, internally decision-makers are assessing how the companies’ philanthropic efforts tie into their values, corporate responsibilities and sustainability strategies. For many, this includes weaving sustainability into their already
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1. Nielsen, M. A. & Chuang, I. L. Quantum Computation and Quantum Information 2nd edn (Cambridge Univ. Press, 2010). 2. Gottesman, D. & Chuang, I. L. Demonstrating the viability of universal quantum computation using teleportation and single-qubit operations. Nature 402, 390–393 (1999). ADS  CAS  Google Scholar  3. Duan, L.-M., Lukin, M. D., Cirac, J. I.
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Charles Munger, vice chairman of Berkshire Hathaway Inc. Jonathan Alcorn | Bloomberg | Getty Images Charlie Munger, vice chairman of Berkshire Hathaway and Warren Buffett’s longtime business partner, on Wednesday dismissed the rocketing share price of Tesla and the recent bitcoin frenzy. During an interview at the Daily Journal’s annual shareholder’s meeting, Munger was asked
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A rendering shows how the buses could look once in use. One of the U.K.’s biggest public transport operators is to trial the use of zero-emission buses from Arrival, a firm specializing in the production of commercial electric vehicles in so-called “microfactories.” In a statement Monday, First Bus, which is part of the larger FirstGroup,
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By: Hannah Pell  With instantaneous communication and access to far more information than any of us could ever know or need, it’s important that there are people we trust to clearly explain the messiness of the world around us. The COVID-19 pandemic has especially demonstrated the challenges of disseminating complex scientific research to the general
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WASHINGTON — Satellite operator Inmarsat has hired the former president and chief executive of Nokia as its new chief executive, succeeding Rupert Pearce. Inmarsat announced Feb. 24 it is hiring Rajeev Suri as its new chief executive, effective March 1. Suri will also take a seat on the board of Inmarsat’s parent company, Connect Bidco
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This article originally was published in the BSR Insight. This is the first post in a four-part series on materiality. After years of debate over the definition of materiality, 2020 has brought a consensus that materiality is double — meaning that businesses should report on financially material topics that influence enterprise value as well as
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The hypothetical ninth planet (illustration).Credit: Shutterstock No sign of Planet Nine? For some years, scientists have debated the existence of an unseen planet at least five times the mass of Earth in the outer reaches of the Solar System. Now, the hypothesis has been dealt a blow by a new analysis of distant, icy objects.
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A positron (β+) deposits energy along its track through the formation of “spurs” and a terminal “blob”, before positronium formation and annihilation to generate two 0.511 MeV photons. (Courtesy: CC BY 4.0/Sci Rep 10.1038/s41598-021-81910-4) Positron-emitting radionuclides have long been employed for diagnostic imaging, with PET scans using fluorine-18 (18F)-labelled fluorodeoxyglucose (FDG) playing an essential role
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Scientists are examining prehistoric viruses from the Siberian permafrost in the animal dug. A lab in Russia’s Siberia state is beginning study about prehistoric viruses conserved in the remnants of animals discovered in melting permafrost.  Led by the Biotechnology,  University of Yakutsk and Vector State Research Centre of Virology, the research will begin by examining tissues
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Jack Dorsey, chief executive officer of Twitter Inc. and Square Inc., speaks during an Empowering Entrepreneurs events at Ryerson University in Toronto, Ontario, Canada, on Tuesday, April 2, 2019. Cole Burston | Bloomberg | Getty Images Square bought $170 million worth of Bitcoin, the company revealed in its fiscal fourth quarter financial report on Tuesday.
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In its first hearing of the 117th Congress, the subcommittee invited experts from think tanks to discuss Russia’s and China’s nuclear and space capabilities. WASHINGTON — The leaders of the House Armed Services Committee’s subcommittee on strategic forces during a hearing Feb. 23 called on the Defense Department and other agencies to more openly discuss
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A few years into Danone’s and General Mills’ regenerative agriculture pilots, one thing has become clear: It’s about data collection. Holistically changing our agriculture system to become more sustainable comes later.  “We really don’t have a great understanding of what happens when farmers make these transitions to regenerative systems,” said Steven Rosenzweig, senior soil scientist
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WASHINGTON – Scott Soenen, who held key engineering jobs at Capella Space and Planet, is the new chief technology officer of Hydrosat, a data analytics company building a satellite constellation to produce a global thermal infrared map. “If you are looking for the one person that has engineered successful remote sensing data platforms across three
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Costfoto | Barcroft Media | Getty Images Bitcoin’s price descended further on Tuesday after U.S. Treasury Secretary Janet Yellen issued a warning about the cryptocurrency. The world’s most valuable digital coin plunged 16% in the last 24 hours, sinking below $50,000 to trade as low as $45,389 at 4:10 a.m. ET, according to data from
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Our Perseverance rover takes up residence on Mars, the space station’s next commercial resupply mission, and a new date for a commercial crew test flight … a few of the stories to tell you about – This Week at NASA! Download Link: https://images.nasa.gov/details-Our%20Perseverance%20Rover%20Takes%20up%20Residence%20on%20Mars%20on%20This%20Week%[email protected]%20%E2%80%93%20February%2020,%202021
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WASHINGTON — Just days after NASA said it was ready to perform a second static-fire test of the Space Launch System core stage, the agency announced Feb. 22 that the test would be delayed because of a valve problem. NASA said it was postponing the Green Run static-fire test, which had been scheduled for Feb.
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El Castillo, or the Temple of Kukulcan, is 98 feet tall and has 365 steps. What you can’t see from the outside is the original, much smaller pyramid that acted as a foundation. UNEARTHED Tuesdays 10/9c on Science http://www.sciencechannel.com/ Watch full episodes! https://www.discoverygo.com/science/ Subscribe to Science Channel: http://bit.ly/SubscribeScience
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Austin has “communicated to Air Force leaders that he supports their decision-making process about the preferred location of Space Command headquarters.” WASHINGTON — Defense Secretary Lloyd Austin has issued a statement in support of the U.S. Air Force’s handling of the basing decision for U.S. Space Command, his spokesman said. Austin’s statement follows an announcement
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