Don’t sweat your exams

Most people enjoy it when the weather gets warmer. Sunny weather often makes people happier but some research indicates that a heatwave may not be good news if you’re taking an exam.

Researchers from Harvard Chan School of Public Health found that students who were exposed to hotter temperatures did significantly less well in cognitive tests than those students who lived in a temperature-controlled environment.

The research involved a group of students who had already been allocated accommodation on campus. Half of the rooms had air conditioning and half didn’t.

The students were followed during a 5-day heatwave where temperatures exceeded 26C.

Before, during and after the heatwave, the students had to perform a number of cognitive tests which measured the speed they processed matters as well as their working memory. The results showed that the scores of these students in the hotter accommodation fell by 13% compared to their colleagues in the air-conditioned temperature stable environment.

The researchers said that it was not clear what was behind the drop in performance during an increase in temperature. It could have been because the brain was working harder on maintaining critical body functions such as thermoregulation or it could have been due to a poorer quality of sleep due to the heat.

Either way, let’s hope it’s not a heatwave the next time you sit an exam…

Is this worth smiling for?

Are you happy when you spend money? I guess the answer depends on what you’re spending the money on but over in China, KFC have technology which enables a person to pay for their KFC meal with a smile.

Yes, a smile.

Nothing else is needed – no bank card, no phone app. Just a smile.

That’s a pretty advanced system and involves facial recognition technology.

Customers who want to get their dose of fast food at the KFC branch in Hangzhou can leave their cash and cards behind and instead smile at a scanner, press confirm and then hey presto you’ve paid for your meal without moving your hands and you will soon be tucking into your Kentucky Fried Chicken.

Payment is taken from a cash account which has been linked to the person’s face.

China has some of the most advanced facial scanning technology in the world. Collecting images of the public doesn’t need any consent in China and the technology is likely to spread.

For example, it’s been reported that students in several universities in China are now registering by scanning their faces and lecturers will soon be able to track the facial expressions of students to see how well they are following the lectures.

It may be advisable for these students to master the act of hiding those yawns during a boring lecture and instead start to practice for the KFC they’re planning to get after the lecture…