Welcome to the Tuesday edition of “Hawaii Science Digest”. This Hawaii Island blog focuses on science, technology, medicine, health, the environment, cyber security, and artificial intelligence (AI). Views expressed in this science news summary are those of the reporters and correspondents. Content provided by the current issue of “ScienceNews”–the official publication of the “Society for Science & the Public”.
Accessed on 29 January 2019, 1625 UTC.
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Earth’s core may have hardened just in time to save its magnetic field
Jan 28 2019 3:02 PM
Earth’s inner core began to solidify about 565 million years ago – just in time to prevent the collapse of the planet’s magnetic field, a study finds.
THE SCIENCE LIFE
Why modern javelin throwers hurled Neandertal spears at hay bales
Jan 28 2019 1:51 PM
A sporting event with replica weapons suggests that Neandertals’ spears may have been made for throwing, not just stabbing.
How light-farming chloroplasts morph into defensive warriors
Jan 28 2019 8:00 AM
Researchers now know which protein triggers light-harvesting plant chloroplasts to turn into cell defenders when a pathogen attacks.
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It’s time to start taking the search for E.T. seriously, astronomers say
Jan 28 2019 6:00 AM
Astronomers are hoping to make looking for alien technology an official science goal of NASA.
Vitamin D supplements aren’t living up to their hype
Jan 27 2019 6:00 AM
Once seen as a supplement with a long list of benefits, vitamin D’s glow may be dimming.
Dogs may have helped ancient Middle Easterners hunt small game
Jan 25 2019 9:56 AM
Jordanian finds point to pooch-aided hunting of small prey around 11,500 years ago, offering new clues into dog domestication in the Middle East.
More Recent Headlines
Male birds’ sexy songs may not advertise their brains after all
JAN 25 2019 7:00 AM
A biologist backs off an idea he studied for years that the mastery of birdsong is a sign of bird smarts.
Lack of sleep is tied to increases in two Alzheimer’s proteins
JAN 24 2019 2:17 PM
In people and mice deprived of sleep, researchers found an increase in tau, a protein involved in Alzheimer’s disease, in the fluid bathing the brain.
Rocking puts adults to sleep faster and makes slumber deeper
JAN 24 2019 11:00 AM
People sleep better when their beds are gently rocked, a small study finds.
Tiny eyes make a bizarre, ancient platypus-like reptile even weirder
JAN 24 2019 9:00 AM
An ancient oddball marine reptile had teeny-tiny eyes, suggesting it probably used senses other than sight to catch food.
50 YEARS AGO
50 years ago, scientists tried to control earthquakes with earthquakes
JAN 24 2019 7:00 AM
In the 1960s, researchers proposed preventing a big earthquake by creating smaller ones. That hasn’t quite worked out.
NEWS IN BRIEF
Young emperor penguins brave icy, winter waters in their first year
JAN 23 2019 5:07 PM
Young emperor penguins learn survival skills on their own, including how to navigate Antarctica’s icy winter ocean.
A CRISPR gene drive for mice is one step closer to reality
JAN 23 2019 1:17 PM
Researchers have made progress toward creating a gene drive for mice in the lab. Such genetic cut-and-paste machines have yet to be made for mammals.
Ordinary cameras can now photograph out-of-sight objects
JAN 23 2019 1:00 PM
Thanks to a new photo-analyzing computer program, a photographer’s line of sight no longer has to be a straight shot.
The cerebellum may do a lot more than just coordinate movement
JAN 23 2019 7:00 AM
A study in mice finds that the cerebellum helps control social behavior, a result that has implications for autism and schizophrenia.
Ring ripples reveal how long a day lasts on Saturn
JAN 22 2019 4:59 PM
Clues in Saturn’s rings divulge the planet’s rotation rate: 10 hours, 33 minutes, 38 seconds.
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