Along the coast of Tel Dor, a maritime city in northwest Israel occupied from the Middle Bronze II period,  2000 BC, through the Crusader period, there is a marine shell and sand layer from nearly 10,000 years ago, but it's in the middle of a large ancient wetland layer spanning as far back as 15,000 years ago. 

What happened to create such a dramatic anomaly? A new study using underwater excavation, borehole drilling, and modeling suggests a massive tsunami struck, depositing seashells and sand in the middle of what was at the time fresh to brackish wetland. And it must have traveled 1.5 to 3.5 kilometers, with a coastal wave height of 16 to 40 meters. 

An international research team has discovered an exotic binary system composed of two young planet-like objects, orbiting each other - and not a star.

They are planet-like because they look like giant exoplanets but they formed in the same way as stars, proving that the mechanisms driving star formation can produce rogue worlds in unusual systems - deprived of a Sun.

Cannabidiol (CBD( products are being illegally marketed for pets, including a product for use in the eye, and for various conditions in humans also, despite any evidence they can prevent, diagnose, mitigate, treat or cure various diseases. Shady hucksters have sought to avoid that by preying on the margins of what are known as “supplements” and exempt from science and logic thanks to President Clinton's Dietary Supplement Health and Education Act of 1994, which declared open season on medicine by legitimizing alternatives with no evidence.

A deficiency in Vitamin D on the mother's side could explain why Autism Spectrum Disorder diagnoses are three times more common in boys, but don't start buying supplements. This was in rats and rats are not little people, there is a lot of ground to cover before this has human relevance.

A recent computer model finds that it doesn't hurt a product to negative reviews and it may even help.

A flawless product does not exist, people are suspicious if they see no bad reviews, and using game theory, the researchers analyzed how negative reviews affect sales. The model had two sets of participants: sellers, who know the true quality of the products they are selling and can selectively publish reviews about it, and buyers, who do not know a product's quality and can be categorized as either 'naïve' or 'rational'.

There is no question that masks prevent transmission of airbone viruses that cause diseases flu and COVID-19 but a new paper shows what will maximize their effectiveness.

Masks are primarily intended to keep us from spreading germs - a surgeon does not wear a mask because she is worried about her patient giving her a disease, she is wearing it to make the other person safer.