Much information can be conveyed, purely through our eyes, so the expression “eyes also talk” is often heard.

Can you recall any experience that further proves this statement? On a bus you may quickly glance at a stranger, but not make eye contact. If he senses that he is being stared at, he may feel uncomfortable.

It is the same in daily life. If you are stared at for more than necessary, you will look at yourself up and down to see if there is anything wrong with you. If nothing goes wrong, you will feel angry about other's staring at you that way. Eyes do convey information, right？

Looking too long at someone may seem to be rude and aggressive. But things are different when it comes to staring at the opposite sex. If a man looks at a woman for more than 10 seconds and refuses to turn away his gaze, his intentions are obvious. That is, he wishes to attract her attention, to make her understand that he is showing affection for her.

However, the normal eye contact for two people engaged in conversation is that the speaker will only look at the listener from time to time, in order to make sure that the listener does pay attention to what the former is speaking, to tell him that he is attentive.

If a speaker looks at you continuously when speaking, as if he tries to control you, you will feel uneasy. A poor liar usually exposes himself by looking too long at the victim, since he believes the false idea that to look straight in the eye is a sign of honest communication.

In fact, continuous eye contact happens between lovers only, who will enjoy looking at each other tenderly for a long time, to show love that words cannot express.

Evidently, eye contact should be done according to the relationship between two people and the specific situation.

Fish Ears Tell Fish Tales

Lightning(闪电) strikes more than eight million times a day worldwide. That’s about 93 times per second. What a phenomenon!

How hot is a lightning bolt? About 50, 000°F-five times hotter than the surface of the sun. Yes, it really can rain frogs, fish, and other decidedly odd things. It’s a rare meteorological(气象学的) event, but scientists say strong winds from a tornado or from a storm can be powerful enough to drive animals and objects high into the air, and they have to comedown eventually.

It is a bad idea to take a shower during a thunderstorm. If lightning hits your house, it can travel through your plumbing(管道设备) and shock anyone who comes into contact with water flowing through it. People have been shocked or killed while bathing, washing dishes and clothes. This is also why indoor pools often close during storms. Rubber tires are not what protect you from lightning when you’re in your car. You’re protected because when lightning hits a car, it travels around the outside of the metal structure to get to the ground. Just be careful not to touch any metal areas inside.

Lightning can strike the same place twice—and it often does, especially objects that are tall, pointy, and separated. The Empire State Building, for example, is hit almost 100 times a year, according to the CDC.

You can be struck by lightning even when it’s no training. About 10 percent of lightning strikes take place when there’s no rainfall. In the 1980s, NASA flew one airplane through 1.496 thunderstorms. It was struck by lightning more than 700 times. Today, a commercial airplane will be hit by lightning about once a year on average, typically with no ill effects. It has been decades since a U.S. airliner has crashed as a result of a lightning strike.

To deal with such a frequent phenomenon, every day, twice a day, weather trackers, at the same time, launch giant balloons from almost 900 locations worldwide. The balloons measure above ground weather data such as temperature, humidity(湿气), and wind speed, and they provide vital information that meteorologists use to make forecasts and predict lightning.