308 articles from WEDNESDAY 18.3.2020

New study says 'high temperature and high relative humidity significantly reduce' spread of COVID-19

A transmission electron micrograph of SARS-CoV-2 virus particles, isolated from a patient. The image was captured and color-enhanced at the NIAID Integrated Research Facility in Fort Detrick, Maryland. SARS-CoV-2 is the virus that causes COVID-19. (National Institute of Allergy and Infectious Diseases, NIH) A team of researchers unveiled the results of a new study last week that looked at how...

Apollo 15 Astronaut Al Worden, Who Circled the Moon, Dies at 88

(CAPE CANAVERAL, Fla.) — Apollo 15 astronaut Al Worden, who circled the moon alone in 1971 while his two crewmates test-drove the first lunar rover, has died at age 88, his family said Wednesday. His family said he died in his sleep in Houston. No cause of death was given. “Al was an American hero whose achievements in space and on Earth will never be forgotten., said NASA...

Noises from human activity may threaten New England's freshwater soundscape

Sounds produced by human activities—anthropogenic sounds—account for more than 90 percent of the underwater soundscape in major freshwater habitats of New England. Rodney Rountree of The Fish Listener in Massachusetts, and Adjunct Associate Professor at the University of Victoria, and colleagues present these findings in the open-access journal PLOS ONE on March 18, 2020.

Some Ask a Taboo Question: Is America Overreacting to Coronavirus?

As an America desperate to stem the coronavirus outbreak put in place sweeping restrictions last week on every facet of public life, the University of Wyoming economist Linda Thunstrom asked what felt like a taboo question: "Are we overreacting?''It helped that Thunstrom was in her kitchen, drinking coffee with her husband, Jason Shogren, a fellow economist who studies how much...

Research team discovers path to razor-sharp black hole images

Last April, the Event Horizon Telescope (EHT) sparked international excitement when it unveiled the first image of a black hole. Today, a team of researchers have published new calculations that predict a striking and intricate substructure within black hole images from extreme gravitational light bending.

Late cretaceous dinosaur-dominated ecosystem

A topic of considerable interest to paleontologists is how dinosaur-dominated ecosystems were structured, how dinosaurs and co-occurring animals were distributed across the landscape, how they interacted with one another, and how these systems compared to ecosystems today. In the Late Cretaceous (~100-66 million years ago), North America was bisected into western and eastern landmasses by a...

Frozen-planet states in exotic helium atoms

Exotic subatomic particles that are like 'normal' particles apart from one, opposite, property—such as the positron, which is like an electron but positively rather than negatively charged—are collectively known as antimatter. Direct studies of collisions between particles of matter and those of antimatter using giant facilities such as those at CERN can advance our understanding of the nature...