영구적인 배터리
Mya Le Thai is a scientist studying at the University of California, Irvine. She recently discovered a process that may result in batteries that last forever.

밤샘 공부
Sleep expert David Earnest often tells college students that a good night’s sleep is important for academic success. Not that they listen to him.

치즈 문화
The United States produces twenty-five percent of the world's cheese. A trade group, the Dairy Export Council, says producers made more than four million metric tons of it from cow's milk last year.

운동 가이드라인
For the first time in 10 years, the United States government has changed its guidance on how much exercise people need to stay healthy and when they should start.

점
Now, both “dot” and “spot” can be used as a verb or a noun. And both have several meanings and can be used several ways.

겨울에 피는 꽃
In many colder northern countries, poinsettias are a sure sign that Christmas is near. Nearly all sales of this flowering plant come at wintertime.

데이 케어
Some parents leave their children with family members, neighbors or friends. Or, they may employ a nanny. This person is a trained care-giver who either lives in the family’s home or comes to work at the house every day.

고대 문서를 열지 않고 읽는다
Scientists in Switzerland say they have improved a method to read age-old documents without even touching them.

치아를 재생시키는 약
A dentist usually treats a cavity by removing the damaged part of the tooth. Then they fill the hole with porcelain or a combination of silver and other metals.

그는 어떤가요?
You want to talk about grandpa Jack, not the bride, don't you? I don't mind talking about the bride. She's the one that I know already. But I do want to talk about your great-grandfather.

결국 ~하게 되다
Jen: I was just telling her, your deals are wonderful but I end up spending a little bit too much money.

손을 자주 씻어야 하는 이유
Medical experts say the most effective way to prevent the spread of disease is for people to wash their hands with soap and water.

당신 안의 제임스 본드?
Of course it's one thing for an action hero to break down a door, leap from a moving motorcycle into a car, or fend off a killer shark. But how would the ordinary, out-of-shape reader do it?

빠르면 빠를수록 좋아
I just got word from the boss that the marketing proposal needs to be in by next week Monday. We should get started on it as soon as possible.

대기하다
The world of Broadway and live theater have given us many expressions. And several come from part of the stage -- the place where plays, musicals and other stage shows are performed.

천 마디 말보다 한 번 보는 게 더 낫다
Julie: I do actually. I have a, what I use for a purse, so to speak is a camera bag. I do. I’ve had this camera since 2008. I’ve taken 15 thousand pictures.

돌부처
A stick in the mud is a boring or uninteresting person. They do not try anything new. They are not willing to take a risk.

블루
Today we begin with a phrase that scientist Wallace Nichols coined in more recent years. It explains how people feel when they are near water.

하루 몇 걸음이 좋은가?
Older women who walk a little over three kilometers each day might live longer than less active women of the same age, a new study suggests.

플립 플랍 샌달
Flip-flop shoes have become very popular in the United States, mostly among young people.