Octopus sleep includes a frenzied, colorful, ‘active’ stage
Octopuses cycle through two stages of slumber, a new study reports. First comes quiet sleep, and then a shift to a twitchy, active sleep...
SCIENTIFIC NEWS
50 years ago, experiments hinted at the possibility of life on Mars
Organics on Mars — Science News, March 27, 1971 [Researchers] have exposed a mixture of gases simulating conditions believed to exist on the surface...
How using sheepskin for legal papers may have prevented fraud
Fraudulent efforts to tweak legal documents in Great Britain may have been thwarted by the very parchment those documents were written on, a new...
Atomic clocks take a step toward redefining the second
A new measurement moves scientists closer to revamping how we keep time. After scientists redefined the unit of mass, the kilogram, in 2019, they...
A new black hole image reveals the behemoth’s magnetic fields
Astronomers have gotten their first glimpse of the magnetic fields tangled around a black hole. The Event Horizon Telescope has unveiled the magnetism of...
The dark matter mystery deepens with the demise of a reported detection
First of two parts In mystery stories, the chief suspect almost always gets exonerated before the end of the book. Typically because a key...
Dim lighting may raise the risk of a West Nile virus exposure
Don’t dim the lights. A survey using more than 6,000 chickens across Florida shows that low levels of light pollution may increase the risk...
Why do sea turtles, penguins and sharks sometimes just swim in circles or spirals?
Marine science has its own crop circle mysteries. Sea turtles, sharks, penguins and even whales sometimes just go circular, swimming around and around in...
Here’s what makes 4 promising COVID-19 vaccines unique — and potentially useful
Barely a year after the World Health Organization declared the coronavirus outbreak a pandemic, 11 vaccines worldwide have been granted emergency use authorization or...
AstraZeneca’s COVID-19 vaccine is 79 percent effective in a U.S. trial
The coronavirus vaccine developed by AstraZeneca and the University of Oxford was effective at preventing COVID-19 symptoms, a clinical trial of more than 30,000...
A choir of katydid ancestors filled the Jurassic rainforest with song 
FAO and the Global South: Advancing Agrifood Transformation through South-South and Triangular Cooperation 
DURBAN CONFERENCE, 25 YEARS ON – Paul Divakar Namala: “Solidarity and Resistance Work in the Long Run” 
Innocent-looking AI reasoning can make bad behavior harder to catch