A rock carving found in the Teymareh rock art site in Khomein county in Central Iran is part man and part mantis, with six limbs.  Was it a mistake? The world's first graphic novel? A way to inspire warriors to fight their foes? We may never know. It's hard to even know its age.

Rock carvings - petroglyphs - of invertebrate animals are rare, so for a new paper  entomologists teamed up with archaeologists to try and identify the motif. They compared the carving with others around the world and with the local six-legged creatures which its prehistoric artists could have encountered.

The 2019 version of the coronavirus that has spread to about 50 countries across the world doesn't appear to be transmittable from pregnant mothers to newborns at birth. The new case study is the second out of China within the last month to confirm that mothers infected with coronavirus disease 2019 (COVID-19) during pregnancy did not infect their babies.

All four mothers in the current study gave birth at Wuhan's Union Hospital while infected. Wuhan in Hubei Province was the epicenter of the current outbreak that has sickened more than 100,000 people worldwide and killed more than 3,400, mostly in China. 

A new paper shows that a selling feature of electric cars, fast-charging stations along highways, actually subject batteries to high temperatures and high resistance that can cause them to crack, leak, and lose their storage capacity.

If you are experiencing symptoms such as fatigue, nausea, dizziness, decreased energy, feeling faint and heartbeat alterations after starting the fad keto diet, you may not have coronavirus or influenza, it may just be the diet.

These are low-carbohydrate, high-fat diets which result in elevated levels of ketones in the blood. A Frontiers in Nutrition study reports that symptoms peak in the first 7 days but dwindle after four weeks. Severity is a wide range because the data are anecdotal, much like the claims of health benefits.

On January 23, 2020, Illinois reported the state's first laboratory-confirmed case (index case) of  severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes COVID-19, in a woman in her 60s who had returned from Wuhan, China in mid-January. Subsequently, the first evidence of secondary transmission in the USA was reported on January 30, when her husband, who had not traveled outside the USA but who does suffer from chronic obstructive pulmonary disease (COPD) and chronic cough, had frequent, close contact with his wife since her return and while she was symptomatic, tested positive for SARS-CoV-2.

640 light-years away in the constellation of Pisces is a planet where the day side temperature exceeds 4,300 degrees Fahrenheit, hot enough enough to vaporize metal.

And it does. Then, on planet tidally locked planet WASP-76b, winds carry the vapor to the cooler permanent night side, where the iron turns into rain. 

 Like our Moon on its orbit around Earth, WASP-76b is tidally locked. It takes as long to rotate around its axis as it does to go around its star so the day side receives thousands of times more radiation from its parent star than the Earth does from the Sun. It's so hot that molecules separate into atoms, and metals like iron evaporate into the atmosphere. The cooler night side is only around 3,000 degrees.