Dogs Are Now Being Trained To Sniff Out Coronavirus

New Slashdot submitter Joe2020 shares a report from the BBC: Firefighters in Corsica, France, are aiming to teach canines how to sniff out coronavirus, as they can other conditions. It’s hoped that detection dogs could be used to identify people with the virus at public places like airports. Their trial is one of several experiments being undertaken in countries including the…

Why Do Matter Particles Come in Threes? A Physics Titan Weighs In.

Three progressively heavier copies of each type of matter particle exist, and no one knows why. A new paper by Steven Weinberg takes a stab at explaining the pattern. From a report: Electrons and two types of quarks, dubbed “up” and “down,” mix in various ways to produce every atom in existence. But puzzlingly, this family of matter particles — the…

Remembering Star Trek Writer DC Fontana, 1939-2019

Long-time Slashdot reader sandbagger brings the news that D. C. Fontana, an influential story editor and writer on the original 1960s TV series Star Trek, has died this week. People reports: The writer is credited with developing the Spock character’s backstory and “expanding Vulcan culture,” SyFy reported of her massive contribution to the beloved sci-fi series. Fontana was the one who…

Why don’t evergreen trees change color and drop their leaves?

As temperatures drop, broad-leafed deciduous trees – think maples and oaks – withdraw the green chlorophyll from their leaves. Their leaves turn colors and fall. Evergreens solve the problem of winter in a different way. Source: https://earthsky.org/earth/why-dont-evergreen-trees-change-drop-leaves…

September’s birthstone is the sapphire

Sapphires, a form of the mineral corundum, were once believed to be protection against snakes. Source: https://earthsky.org/human-world/september-birthstone-sapphire…

US Border Officials Are Increasingly Denying Entry To Travelers Over Others’ Social Media

Travelers are increasingly being denied entry to the United States as border officials hold them accountable for messages, images and video on their devices sent by other people. From a report: It’s a bizarre set of circumstances that has seen countless number of foreign nationals rejected from the U.S. after friends, family or even strangers send messages, images or videos over…