Puerto Rico’s iconic Arecibo Observatory will be demolished

Arecibo’s days are done. After two support cables failed in recent months, the radio observatory’s 305-meter-wide dish is damaged beyond repair, the National Science Foundation announced on November 19. It will be decommissioned and dismantled. “It’s a death in the family,” says astronomer Martha Haynes of Cornell University, who has used the telescope in Puerto […]

The CDC says not to travel on Thanksgiving

The plane isn’t the only dangerous part of the equation. (Unsplash/) Follow all of PopSci’s COVID-19 coverage here, including the truth about herd immunity, advice for pregnant women, and a tutorial on making your own mask. COVID-19 is on the rise across the United States. This week’s new cases have averaged at 162,816 per day, […]

A filter for environmental remediation

IMAGE: Seaweed-like sodium titanate mat for Co2+ removal view more  Credit: Osaka University Osaka, Japan – A team of researchers at Osaka University has developed a nanopowder shaped like seaweed for a water filter to help remove toxic metal ions (Fig. 1). Made of layered sodium titanate, the randomly oriented nanofibers increase the efficacy of cobalt-II […]

Low temperature, scalable manufacturing of flexible energy harvesters

A simple approach to create high performance thermoelectric materials, which would allow one to turn their body heat into electricity. Imagine mixing together a few solutions and creating a material that would allow one to turn their body heat into electricity. A simple approach to energy harvesting is within reach now that an interdisciplinary team […]

An imperceptible thin-film sensor to record movement and the sense of touch

The polyurethane and gold sensor can resist shear forces and rubbing. Credit: © 2020 Someya et al. Researchers have developed an ultrathin pressure sensor that can be attached directly to the skin and measure how fingers interact with objects to produce useful data for medical and technological applications. The sensor has minimal effect on the […]

CDC urges Americans not to travel for Thanksgiving

The Centers for Disease Control and Prevention (CDC) strongly recommends against travel for Thanksgiving this year, as cases of COVID-19 soar throughout the country. “We’re alarmed with the exponential increase in cases, hospitalizations and deaths” in the United States, Dr. Henry Walke, the CDC’s COVID-19 incident manager, said in a news briefing Thursday (Nov. 19). […]

50 years ago, Earth’s magnetic field was tied to extinctions

Effects of Earth’s magnetic field — Science News, November 21, 1970 Earth’s magnetic field has frequently reversed at intervals of 1 million to 100 million years. A few scientists now suspect that these reversals may have had drastic effects on terrestrial life.… During the past 2.5 million years, eight species of one-cell marine animals called […]

By Land or Sea: How Did Mammals Get to the Caribbean Islands?

This work is dedicated to the memory of Gilles Merzeraud, who passed away on 30 October 2020. As a colleague and as a friend, he was a key figure of the GAARAnti team. The islands of the West Indies—comprising the Greater Antilles, Bahamas, and Lesser Antilles—feature remarkable biodiversity, with species mainly having originated […]