Fine tuning the “twist” between 2-D materials in van der Waals heterostructures to help accelerate next gen electronics

This image shows cartoons and micrographics that highlight the new technique of in situ twistronics. Credit: Artem Mishchenko/The University of Manchester A group of international researchers at The University of Manchester have revealed a novel method that could fine tune the angle—”twist”—between atom-thin layers that form exotic manmade nanodevices called van der Waals heterostructures—and help […]

Mysterious minimoon circling Earth is actually a 1960s rocket booster

A mysterious minimoon temporarily orbiting Earth isn’t a chunky space rock, but a 1960s rocket booster, NASA reported Wednesday (Dec. 2). Researchers had an inkling that the minimoon might be human-made, but it wasn’t until this week that they confirmed it, after analyzing its composition from afar at NASA’s Infrared Telescope Facility (IRTF).  In fact, […]

Readers ask about life on Venus and high-energy cosmic rays

October 10, 2020 cover

Venusian recollection Phosphine gas detected in the clouds of Venus could be a sign of life or some strange unknown chemistry, Lisa Grossman reported in “Possible sign of life is found on Venus” (SN: 10/10/20 & 10/24/20, p. 6). The story brought back memories for reader Bruce Hapke, a professor of planetary science at the […]

The climate changed rapidly alongside sea ice decline in the north — ScienceDaily

Researchers from the Niels Bohr Institute, University of Copenhagen have, in collaboration with Norwegian researchers in the ERC Synergy project, ICE2ICE, shown that abrupt climate change occurred as a result of widespread decrease of sea ice. This scientific breakthrough concludes a long-lasting debate on the mechanisms causing abrupt climate change during the glacial period. It […]

Our Food Systems Are Complicated. Food Data Don’t Have to Be

At a time when half of the fresh fruit purchased in the United States comes from other countries and sandwiches have carbon footprints, today’s food landscape is giving some consumers more options. Yet this bounty of choices remains unavailable to many, and it comes with environmental costs. The webs of agricultural and commercial […]

These ghostly circles in the sky came out of nowhere

You might not notice these mysterious celestial imprints with bare eyes, but they’re out there. (Rad Pozniakov/Unsplash /) Ray Norris is a professor at the School of Science at Western Sydney University. This story originally featured on The Conversation. In September 2019, my colleague Anna Kapinska gave a presentation showing interesting objects she’d found while […]

Donor stem cell transplant shown to improve survival in older patients with MDS

IMAGE: Corey Cutler, MD, MPH, FRCPC view more  Credit: Dana-Farber Cancer Institute A new clinical trial offers the most compelling evidence to date that a donor stem cell transplant can improve survival rates for older patients with higher-risk myelodysplastic syndrome (MDS), Dana-Farber Cancer Institute investigators report at the virtual 62nd American Society of Hematology (ASH) Annual […]

Returning asteroid sample could help uncover the origins of life and the solar system

Artist impression of Hayabusa 2 approaching asteroid Ryugu. Credit: Deutsches Zentrum für Luft- und Raumfahrt (DLR)/wikipedia, CC BY-SA What is your idea of an asteroid? Many people think of them as potato-shaped, inert and perhaps rather dull, pock-marked objects—far away in deep space. But over the last ten years, two Japanese space missions – Hayabusa […]

World’s oldest animal fossil actually came from rotting algae

Hundreds of millions of years ago, one of the very first animals on Earth died at the bottom of an ancient ocean. In life, it was a humble sea sponge; in death, it had no bones, nor teeth, nor shell to leave behind as evidence of its brief, bottom-dwelling existence. But it did have fat […]

Why losing Arecibo is a big deal for astronomy

Edgard Rivera-Valentín first visited the Arecibo Observatory as a little kid. “I definitely remember this feeling of just being awestruck,” Rivera-Valentín says. “Looking at this gigantic telescope … getting to hear about all this neat work that was being done … it definitely leaves an impression.” Important science was happening right in the backyard of […]