Want a more accurate estimate of waiting time to get through security at airports? 

Obviously monitoring Bluetooth and Wi-Fi is one way to go, but often people shut those off in the airport to conserve energy. Monitoring cell phones and tablets doesn't work if only 30% of people have them on. 

As many of us know, queues at airports are arranged in mazes using retractable ribbon barriers. Security personnel adjust the barriers according to the size of the queue, and analysis also 'learns' how the flow of people moves over time. This is then used to give an estimate of how long it takes for the queue to pass through security.

Researchers recently got 54 volunteers to try on free shoes. But this wasn't for fun, it was for a biomechanical study of the shoes manufactured by the Majorcan Camper brand.

The six designs of men's and women's footwear were then analyzed using optical motion capture systems, force plates, in-shoe pressure measurement devices and electromyography (EMG) sensors. The aim was to determine the parameters that affect how comfortable the shoes are.

Tetraquarks are hypothetical particles made up by four quarks (two quarks and two antiquarks). Unlike mesons (quark-antiquark pairs) and baryons (three-quark or three-antiquark systems), the quarks in a tetraquark are quite loosely bound within their confinement volume by strong interactions, as can be calculated with the help of quantum chromodynamics. Their tendence to separate into two quark-antiquark systems should yield a very short lifetime, making their observation quite difficult. However, some tentative evidence for their existence exists.

Are you obsessed with checking email?

You could be damaging your mental health and that of their colleagues too, according to Kingston University occupational psychologist Dr. Emma Russell.

Russell says she has identified 7 deadly email sins that can lead to 'negative repercussions' if not handled correctly. Some of the worst habits include 'ping pong' messages back and forth and 'read receipts', which accompany every missive sent, the study, looking into which email practices stress employees out, found.

Male black widow spiders on the prowl to mate (and sometimes be victims of black widow cannibalism by females, thus the name Latrodectus mactans) shake their abdomens to produce carefully pitched vibrations and avoid potential attacks by females – who otherwise may misinterpret the advances as the vibrations of prey.

They want her to know they are a male and not a meal. If you read this and know who Miley Cyrus is, they basically twerk.

The team recorded the vibrations made by male black widow spiders (Latrodectus hesperus), hobo spiders (Tegenaria agrestis) and prey insects.

Archaeologists working at  Abydos in southern Egypt have discovered the tomb of a previously unknown pharaoh named Woseribre Senebkay — and found the first material proof of a forgotten Abydos Dynasty from around 1650-1600 B.C. 

The tomb of the previously unknown pharaoh Senebkay was discovered close to a larger royal tomb, recently identified as belonging to a king Sobekhotep, probably Sobekhotep I, circa. 1780 B.C. of the 13th Dynasty.

While it's going to make government accountants cringe, 2,000,000 people in England could be eligible for weight loss surgery, according to a paper in JRSM Open.

That figure far exceeds previous estimates of eligibility in England for bariatric surgery. People fulfilling the national criteria were more likely to be women, retired, have lower educational qualifications and have lower socioeconomic status. But in fuzzy estimates, proponents say spending the money on bariatric surgery – a set of surgical procedures performed on obese people to decrease their stomach size – now can greatly reduce the likelihood of obesity-related diseases including type 2 diabetes, stroke and coronary heart disease and eventual death due to those.