Do you experience worse car sickness in electric cars than in petrol cars? You’re not alone - and when it comes to self-driving cars, it may be even worse.

Although scientists aren’t exactly sure what causes motion sickness, it has to do with passengers losing the ability to predict future movements. When you read a magazine in a car, your eyes will signal to your brain that the car is not moving. However, your brain will recognize the vibrations (振动) and turns that the car makes. This can confuse the mind and make you start to feel sick.

As for electric cars, one-pedal (单踏板) driving is often linked to feelings of car sickness, according to the US Department of Energy. The one pedal does both the accelerating (加速) and braking (刹 车) - the driver steps on the pedal to increase speed and takes their foot off the pedal to slow down. If you stop accelerating, the one-pedal will automatically slow and stop the car. The deceleration caused by this system is thus more rapid than that of petrol cars, which may lead to motion sickness.

Another technological advance that can also be related to car sickness is the larger and increasing number of screens inside vehicles. These screens overburden users with visual information, which discourages them from looking outside, according to The Conversation. Passengers thereby lose their ability to take in the “correct” visual signals, such as the moving surroundings, which can lead to sickness.

Unfortunately, even when people get used to the movements of electric cars and experience less car sickness, self-driving vehicles might be another challenge for them. According to a 2015 study, as much as 12 percent of the US population may feel carsick while riding in autonomous vehicles.

To ensure the widespread usage of new types of vehicles, car producers are working to solve such problems with better technology. For example, Japanese company Honda is working on reducing the car’s “violent (猛烈的) ”acceleration by making changes to the engine, said Car Magazine.

Human activity has shrunk the size of wild animals the world over, and yet recent research has found many mammals (哺乳动物) living near cities have become steadily larger,   both in length and in weight.

“That wasn’t what we expected to find at all,” says Robert Guralnick, who studies biodiversity informatics at the Florida Museum. Expanding urban environments grow much hotter than natural habitats (生长环境), and warmer temperatures usually benefit mammals that have a smaller, more energy-saving figure — a principle of biology known as Bergmann’s rule.

As the world grows warmer, some scientists have worried that mammals living near cities are supposed to grow smaller, possibly reducing their fitness as a species and, no doubt, the fitness of being threateners (威胁者), too. But even with climate change, that might not happen. As it turns out, there’s another factor in determining a mammal’s size that might compete with or even go beyond temperature, and that is food.

In and around cities with large populations, where high-energy human foods are more widely available and hunters are fewer and farther in between, new research discovered that most of the mammal species studied appear to be growing in size, not shrinking. According to careful measurements of more than 100 species from North America, gathered from museum collections over the past 80 years, the main reason is not a city’s temperature. Instead, the greatest increases in weight and body length appear to lie among those mammals that live near the most humans, regardless of how hot their surroundings are.

As climate change grows worse, there is, of course, the possibility that that might change, but at least for now, it seems that wolves, deer, bats, and other mammals in North America could be affected more by city populations than city climates.

If we want to preserve the mammals that exist today for the future, it’s important that we know how human civilization is shaping their size, behavior and well-being. In a rapidly changing world, that knowledge could mean the difference between ongoing life and dying out.

The ability to use the left hand is referred to as left-handedness. Left-handedness is actually more common in the male population than in females. There are a number of myths (杜撰的事) about them.

It is difficult for left-handed children to learn writing of the alphabet, without personal tutoring. Not true at all. Observe the left-handed toddler. Everyone else is more bothered about his left-handedness than he himself is. The left-handed child adapts to writing, drawing and all other activities that require him to hold a writing tool as early as the right-handed. In fact, many left-handed people display neater handwriting than their right-handed partners.

Lefties have a lesser chance of surviving a hand-to-hand fight. This is anything but true. History bears witness to the advantage left-handedness had during hand-to-hand fights and even within the boxing ring. In fact, a common observation is that the left-handed fighter is able to strike a strong surprise attack on the open, unprotected right side.

Left-handed people are many a time at the disadvantage of using tools designed for the right-handed. Well, this is true, but today, there is a whole range of tools and equipment being designed for left-handed people. Many right-handed tools too are available, such that they can be molded to suit the needs of the left-handed craftsman. Even the computer mouse has been challenged in use and the touch pad provides a left-handed professional equal opportunity.

Research reveals that left-handed people are in fact high achievers. This is because their brains are structured to widen their abilities. A number of mathematical, artistic and sporting geniuses were and are left-handed. However, most left-handers over the world, might have, at some stage in their life, been on the receiving end of an uncomplimentary (贬损的) remark or comment regarding their choice of hand. I am sure this list and discussion about the myths and facts would be reason enough to be proud of being left-handed.