Believe it or not, driving can lower your IQ. In a recent study of about 500,000 people between ages 37 and 73, researchers found a noticeable drop-off in brainpower, intelligence and memory. Among the people are those who drove for more than two hours each day. The study also found that the more time people spent watching TV or driving, the  their test scores. It is because such activity fails to either the body or the brain. If you must drive long

to work, consider adding a mentally active activity on the road, such as listening to language lessons.

    Other teachers are trying more unusual to improve students' concentration. Anne Savan, from Wales, was so worried about her students that she started playing Mozart during her science lessons. She says that it had an amazing effect: " The music made them , and their concentration was much better."

    But not everyone believes that there is a problem. Ray Cole, an educational psychologist says: " On the web, young people learn to make quick decisions about what is and isn't reading.

    They might look at five unhelpful websites very quickly, before stopping and reading a sixth useful website more . In a word with so much information available, this is an important skill."

    Scientists have invented a font (字体) called Sans Forgetica. It is back-slanted (反斜的) and there are openings in each letter. So what's the  of this reader —unfriendly font?

    In fact, Sans Forgetica is the first font which is  to help people remember things. Its designer Steven Brian said, "The unexpected obstacles (障碍) slow your reading speed down. They make your brain work harder. It should be easier for you to remember what you are doing"Scientists have tested Sans Forgetica on 4,400 students in online .They said they were satisfied with the result.

    However. scientists say that teachers should not print all reading materials in the font. If students read everything in this font, their brains will get too comfortable again. They will  ignore the key points.