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Up to 81% of COVID-19-Positive Patients are Asymptomatic: Study

This scanning electron microscope image shows SARS-CoV-2 (yellow) isolated from a patient in the U.S., emerging from the surface of cells (blue/pink) cultured in the lab. Image credit: NIAID.
Jun 1, 2020 by News Staff

In a paper published in the journal Thorax, a team of Australia researchers described the first instance of complete COVID-19 testing of all passengers and crew on an isolated cruise ship during the current pandemic: of the 217 passengers and crew on board, 128 tested positive for COVID-19 on reverse transcription-PCR; of the COVID-19-positive patients, only 24 (19%) were symptomatic. The majority of COVID-19-positive patients may be asymptomatic....

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This artist’s impression shows the first interstellar asteroid -- 1I/2017 U1 (’Oumuamua). Image credit: M. Kornmesser / ESO.

Interstellar Object Oumuamua Could Be Hydrogen Ice-Rich Body

May 31, 2020 by Enrico de Lazaro

In a paper to be published in the Astrophysical Journal Letters, astronomers from the University of Chicago and Yale University show that the odd properties...

The occasional use of stone tools as ‘strike-a-lights’ was a technocultural feature shared among Neanderthals in France.

Study: Women with Neanderthal Progesterone Gene Have Higher Fertility

May 29, 2020 by Enrico de Lazaro

A hormone called progesterone is important for preparing the uterine lining for egg implantation and in maintaining the early stages of pregnancy. Almost...

An artist’s impression of the jeholornithiform avialan Jeholornis. Image credit: Aijuan Shi.

Fossil of Ancient Long-Tailed Bird Found in China

May 27, 2020 by Enrico de Lazaro

A new genus and species of jeholornithiform avialan that lived during the Cretaceous period has been identified from a nearly-complete specimen found in...

Electric currents (blue and red arrows) envelop Mars in a nested, double-loop structure that wraps continuously around the planet from its day side to its night side. These current loops distort the solar wind magnetic field (not pictured), which drapes around Mars to create an induced magnetosphere around the planet. In the process, the currents electrically connect Mars’ upper atmosphere and the induced magnetosphere to the solar wind, transferring electric and magnetic energy generated at the boundary of the induced magnetosphere (faint inner paraboloid) and at the solar wind bow shock (faint outer paraboloid). Image credit: NASA / Goddard / MAVEN / CU Boulder / SVS / Cindy Starr.

Researchers Create Map of Electric Currents in Magnetosphere of Mars

May 27, 2020 by News Staff

Using five years of magnetic field data obtained by NASA’s MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft, a team of scientists has created...

An artist’s impression of the collisional ring galaxy R5519. Image credit: James Josephides, Swinburne Astronomy Productions.

Astronomers Find Giant Collisional Ring Galaxy in Early Universe

May 26, 2020 by Sergio Prostak

Astronomers have spotted a giant galaxy with a massive star-forming ring that existed 10.8 billion years ago. An artist’s impression of the collisional...

Reconstruction of the cave bear (Ursus spelaeus). Image credit: Sergio de la Larosa / CC BY-SA 3.0.

European Cave Bears Had Pure Herbivorous Diet

May 26, 2020 by Natali Anderson

An isotopic analysis of fossil collagen from the bones collected in three Romanian caves indicates that the cave bear (Ursus spelaeus), an extinct species...

The jojoba (Simmondsia chinensis) in King Canyon Wash, Saguaro National Park West, Arizona, the United States. Image credit: Katja Schulz / CC BY 2.0.

Researchers Sequence Genome of Jojoba Plant

May 26, 2020 by Natali Anderson

An international team of scientists has for the first time mapped the entire genome of the jojoba plant (Simmondsia chinensis). The jojoba (Simmondsia...

Bumblebee workers facing pollen scarcity use their proboscises and mandibles to cut distinctively shaped holes in plant leaves, with each damage event taking only a few seconds. Image credit: Hannier Pulido / ETH Zurich.

Bumblebees Bite Leaves of Flowerless Plants to Stimulate Earlier Flowering

May 25, 2020 by News Staff

Bumblebees rely heavily on pollen resources for essential nutrients as they build their summer colonies. Therefore, annual differences in the availability...

This image shows the Jupiter trojan asteroid 2019 LD2. Image credit: ATLAS.

Astronomers Spot First Trojan Asteroid with Comet-Like Tail: 2019 LD2

May 22, 2020 by News Staff

2019 LD2 is the first known Jupiter trojan asteroid to display cometary activity with a visible coma and tail, according to a team of astronomers from...

The 300,000-year-old wooden throwing stick at Schöningen 13 II-4, Germany. Image credit: Alexander Gonschior.

300,000-Year-Old Wooden Throwing Stick Found in Germany

May 22, 2020 by Sergio Prostak

A team of archaeologists from the University of Tübingen and the University of Liège has unearthed a well-preserved wooden throwing stick at the Middle...

An artist’s impression of DLA0817g (Wolfe Disk), a massive, rotating disk galaxy in the early, dusty Universe. Image credit: NRAO / AUI / NSF / S. Dagnello.

Massive, Rotating Disk Galaxy Spotted 12.3 Billion Light-Years Away

May 20, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found evidence for the most distant rotationally supported disk galaxy ever...

Titanichthys was a suspension feeder with jaws ill-suited for biting and crushing but well suited for gaping ram feeding. Image credit: Mark Witton.

Titanichthys: Devonian-Period Armored Fish was Suspension Feeder

May 20, 2020 by News Staff

Titanichthys, a giant placoderm (armored fish) from the Devonian period, fed in a similar manner to basking sharks, according to a study published in the...

Life reconstruction of the first Australian elaphrosaur. Image credit: Ruairidh Duncan.

New Dinosaur Unearthed in Australia

May 18, 2020 by Enrico de Lazaro

Paleontologists in Australia have found a fossilized vertebra from an elaphrosaurine theropod dinosaur that walked the Earth 110 million years ago (Cretaceous...

An artist’s impression of the super-Earth exoplanet HD 164922d. Image credit: Sci-News.com.

Hot Super-Earth Discovered Orbiting Ancient Star

May 18, 2020 by Natali Anderson

An international team of astronomers has discovered a close-in super-Earth exoplanet in the HD 164922 planetary system. An artist’s impression of the...

Colorized scanning electron micrograph of a VERO E6 cell (purple) exhibiting elongated cell projections and signs of apoptosis, after infection with SARS-CoV-2 virus particles (pink), which were isolated from a patient sample. Image credit: NIAID.

New Antibody Completely Neutralizes SARS-CoV-2 Coronavirus

May 18, 2020 by News Staff

A team of researchers from Sorrento Therapeutics, Inc. has isolated a new antibody that completely inhibits the SARS-CoV-2 coronavirus virus in cell culture. Colorized...

Hawaiian Volcano Puhahonu is Earth’s Biggest and Hottest Shield Volcano

May 15, 2020 by News Staff

Pūhāhonu (‘turtle rising for breath’ in Hawaiian), a 13-million-year-old volcano in the northwest Hawaiian Ridge, is twice the size of Mauna Loa...

Seven New Species of Australian Peacock Spiders Discovered

May 14, 2020 by Natali Anderson

Museums Victoria arachnologist Joseph Schubert has described seven new species of the peacock spider genus Maratus from Australia. Maratus azureus. Image...

Uintacrinus socialis from the Niobrara Formation, Kansas, United States. Image credit: James St. John / CC BY 2.0.

Paleontologists Find Strange Ball-Like Structures in 80-Million-Year-Old Fossils

May 14, 2020 by Enrico de Lazaro

A team of paleontologists from Australia and the UK has found fullerene-like structures in Cretaceous-period crinoids, marine animals related to starfish,...

Yang & Song found that refracted waves (blue), rather than reflected waves (purple) change over time, providing the best evidence yet that Earth’s inner core is rotating. Image credit: Michael Vincent.

Earth’s Inner Core is Rotating, Study Says

May 13, 2020 by News Staff

The inner core of the Earth is rotating at about 0.05-0.1 degrees per year, according to an analysis of seismic data from repeating earthquakes published...

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