Category Archives: Science & Health

Science and health issues or matters. Find health items for virus COVID-19 in this category.

How to plan for summer travel in 2021 – The Washington Post

(iStock/ Washington Post illustration)
(iStock/ Washington Post illustration)
While we may be traveling this summer, it won’t be the “old normal.” Here are travel experts’ predictions.

February 24

After a particularly brutal winter in isolation, summer travel dreams feel like a glimmer of hope shimmering on the distant horizon.

Source: How to plan for summer travel in 2021 – The Washington Post

How to Clean and Refresh Your Pantry for Spring – Sunset Magazine

Start spring cooking with a clean slate.

Ellen Fort and Maya Wong
 – March 11, 2020 | Updated February 22, 2021

Experts share their advice for sorting through your spice collection, checking the quality of your olive oil, and finally streamlining your pantry storage.

Source: How to Clean and Refresh Your Pantry for Spring – Sunset Magazine

5 Ways to Upgrade Your Mask in 2021 – Consumer Reports

By Hallie Levine Last updated: February 18, 2021

Some experts suggest doubling up for added protection—but how you do so matters.

With more contagious coronavirus variants spreading, a simple cloth mask might not always be enough. Consumer Reports explains how to upgrade your mask.

More contagious variants of SARS-CoV-2 are now spreading in the U.S., with one potentially poised to become the predominant strain in this country by March, according to the Centers for Disease Control and Prevention.

Source: 5 Ways to Upgrade Your Mask in 2021 – Consumer Reports

NASA’s Mars Perseverance Rover Provides Front-Row Seat to Landing, First Audio Recording of Red Planet

NASA image
NASA image



NASA’s Jet Propulsion Laboratory, the leading center for robotic exploration of the solar system.

NASA Video and Sound

The agency’s newest rover captured first-of-its-kind footage of its Feb. 18 touchdown and has recorded audio of Martian wind.

New video from NASA’s Mars 2020 Perseverance rover chronicles major milestones during the final minutes of its entry, descent, and landing (EDL) on the Red Planet on Feb. 18 as the spacecraft plummeted, parachuted, and rocketed toward the surface of Mars. A microphone on the rover also has provided the first audio recording of sounds from Mars.

–From article

Source: NASA’s Mars Perseverance Rover Provides Front-Row Seat to Landing, First Audio Recording of Red Planet

NC’s Crustaceans, Shellfish Make A Big Splash | Coastal Review Online

Brown shrimp. Photo: NOAA
Brown shrimp. Photo: NOAA

Blue crab in defensive posture raising claws in defense of a perceived intruder. Photo: Robert Michelson


They might be relatively small — even jumbo shrimp — but shellfish and crustaceans are valuable fisheries in North Carolina, worth millions of dollars each year.



North Carolina is home to numerous species of crustaceans and shellfish, in many shapes, sizes and colors.  This is our first installment in an in-depth look at some of the more popular and interesting animals in this category that call coastal North Carolina home.

Crustaceans and shellfish do not put up a fight to catch them like most fish species. You do not need an expensive rod, reel or lures and most of them stay in the same location year-round and do not leave North Carolina waters.

Source: NC’s Crustaceans, Shellfish Make A Big Splash | Coastal Review Online

How Librarians Can Fight QAnon – The Atlantic

As “Do the research” becomes a rallying cry for conspiracy theorists, classical information literacy is not enough.

Link and alert thanks to: Library Link of the Day
http://www.tk421.net/librarylink/  (archive, rss, subscribe options)

Source: How Librarians Can Fight QAnon – The Atlantic

Polar Bears Live on the Edge of the Climate Change Crisis | Science | Smithsonian Magazine

Photographs by Neil Ever Osborne; Text by Neil Ever Osborne and Mark Jacquemain

SMITHSONIAN MAGAZINE | March 2021

A polar bear, dependent on sea ice for its hunting grounds, pauses near Churchill, Manitoba. (Neil Ever Osborne)
A polar bear, dependent on sea ice for its hunting grounds, pauses near Churchill, Manitoba. (Neil Ever Osborne)

On the bay this fall morning, there’s a wind-carved rim of ice and a gathering of floes. One male polar bear, bony after a season without seal blubber, struggles along the slushy edge, haunches soaked, nearly slipping into the sea.

We are on Gordon Point, in northern Manitoba, where Hudson Bay widens into its northwest crescent. Polar winds make it colder than at comparable latitudes, and the shallow waters of the bay freeze early. Having passed the summer months in the subarctic wild of Wapusk National Park to the south, polar bears now congregate here, waiting for the ice to come in.

Source: Polar Bears Live on the Edge of the Climate Change Crisis | Science | Smithsonian Magazine

Upheaval and extinctions linked to magnetic reversal 42,000 years ago | Earth | EarthSky

Posted by Kelly Whitt in Earth | Human World | February 20, 2021

As the magnetic reversal of 42,000 years ago helped bring about earthly extinctions, these scientists said, the skies would have been lit by widespread auroras. These scientists suggest the reversal could help explain evolutionary mysteries, such as the extinction of Neanderthals. Image via Unsplash/ UNSW.

A magnetic reversal 42,000 years ago helped bring about earthly extinctions, scientists said, accompanied by changes in the sky including electrical storms and widespread auroras.

A new international study suggests that a magnetic field reversal – combined with changing solar winds – contributed to an environmental crisis and mass extinctions 42,000 years ago. It happened around the time of the demise of the Neanderthals, an extinct human species that once roamed what’s now Europe, these scientists said, and it would have come with electrical storms, widespread auroras and an influx of cosmic radiation.

Source: Upheaval and extinctions linked to magnetic reversal 42,000 years ago | Earth | EarthSky

4 Android Smartphones With as Much Power as NASA’s Mars Helicopter

NASA's Ingenuity Mars Helicopter artist concept (Credit: NASA/JPL-Caltech)
NASA’s Ingenuity Mars Helicopter artist concept (Credit: NASA/JPL-Caltech)

The Ingenuity helicopter, which landed on Mars this week via the Perseverance rover, runs a Qualcomm Snapdragon 801 processor, while the rover itself has similar power to early iMacs.

Mars has a new inhabitant: the Snapdragon.

The common Qualcomm Snapdragon processor, which powers most of the Android smartphones in the US, is running inside Ingenuity, an autonomous drone now on Mars, Qualcomm says. It arrived on the Red Planet yesterday via the Perseverance rover (which uses a processor similar to those you’d find in early iMacs), and will be our first attempt to fly something in the atmosphere of Mars.

Source: 4 Android Smartphones With as Much Power as NASA’s Mars Helicopter

Crisis Ensued The Last Time Earth’s Magnetic Poles Flipped, Researchers Say : NPR

  A giant kauri tree grows in Waipoua Forest in Northland, New Zealand. Trees like this one that fell long ago and were preserved for thousands of years are helping researchers discern fluctuations in the Earth's magnetic poles. Kim Westerskov/Getty Images
A giant kauri tree grows in Waipoua Forest in Northland, New Zealand. Trees like this one that fell long ago and were preserved for thousands of years are helping researchers discern fluctuations in the Earth’s magnetic poles. Kim Westerskov/Getty Images

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An ancient, well-preserved tree that was alive the last time the Earth’s magnetic poles flipped has helped scientists pin down more precise timing of that event, which occurred about 42,000 years ago.

This new information has led them to link the flipping of the poles to key moments in the prehistoric record, like the sudden appearance of cave art and the mysterious extinction of large mammals and the Neanderthals. They argue that the weakening of the Earth’s magnetic field would have briefly transformed the world by altering its climate and allowing far more ultraviolet light to pour in.

Source: Crisis Ensued The Last Time Earth’s Magnetic Poles Flipped, Researchers Say : NPR

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