When we see well, we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.

    People who are near-sighted can only see things that are very close to their eyes. Everything else seems ­­blurry. Many people who do a lot of work, such as writing, reading and sewing become near-sighted. People who are far-sighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm's length. If they want to do much reading, they must get glasses, too.

    Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts (白内障). Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.

    Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself, look at an object out of one eye; then look at the same object out of your other eye. You will find the object's relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distances as people with two eyes.

    Anew international study shows that some peopled biological clock plays a powerful role for their life expectancy, regardless of lifestyle choices.

Published in the latest issue of Aging on Wednesday, the study has found the most definitive evidence to explain why some people keep healthy lifestyle but die younger than others.

    Geneticist Steve Horvath from the University of California, Los Angeles (UCLA), led a team of 65 scientists around the world to record age-related changes to human DNA, analyse blood samples collected from 13,000 people and estimate their lifespan.

    A higher biological age, regardless of actual age, consistently predicts an earlier death, the study says.

    “You get people who are vegan, sleep 10 hours a day, have a low-stress job, and still end up dying young,” Horvath said in a statement. “We have shown some people have a faster innate aging rate.”

    The findings discovered that 5 percent of the population ages at a faster biological rate, which translated to a roughly 50 percent higher than average risk of death at any age.

    “The great hope is that we find anti-aging interventions that would slow your innate aging rate,” Horvath said, adding that “this is an important milestone to realizing this dream.

    Prateek Sharma was born into a family of farmers. After 10 years of being a chief manager of Kotak Mahindra Bank, he did a good job and earned a good pay. But Prateek couldn't continue the corporation life with ease, as his heart was always in farming. So he worked as a banker on weekdays and on weekends travelled 100 km to get to his 5-acre in Dhaba Khurd.

    By the end of 2015, Prateek had set up a house on his farm to grow offseason vegetables. Prateek thought he'd quit his job once he was able to earn enough from farming, but this wasn't an easy decision to make. This was because costs to grow these vegetables were very high, along with the fact that farmers weren't a part of the value chain and thus couldn't decide the price of their own vegetables.

    Fortunately, Prateek met Vinay Yadav, another educated farmer. They then decided to start their own value chain and sell their vegetables and grains, while skipping the middlemen. The variety of vegetables they grew wasn't enough, so they decided to form a group of farmers.

    Once the plan was ready, the group was registered by the name of Farmer Producer Organization (FPO). However, the trial failed in the first year as most of the farmers were grain growers and had limited knowledge of growing vegetables. However, the largest reason was the switch to organic from chemical.

    Luckily, once the soil was used to organic methods, the next round of crops were successful and the FPO had a good amount of produce. So at the end of 2017, Prateek finally quit his job and devoted all his time to farming. Now he's successful and recently his team has started two farmer resource centers at Dhaba Khurd and Nathrula Canj.

    Will it matter if you don't take your breakfast? A short time ago, a test was given in the United States. People of different ages, from 12 to 83, were asked to have a test. During the test, these people were given all kinds of breakfast, and sometimes they got no breakfast at all. Scientists wanted to see how well their bodies worked when they had eaten different kinds of breakfast.

    The results show that if a person eats a right breakfast, he or she will work better than if he or she has no breakfast. If a student has fruit, egg, bread and milk before going to school, he or she will learn more quickly and listen more carefully.

    The result is opposite to what some people think. Having no breakfast will not help you lose weight. This is because people become so hungry at noon that they eat too much for lunch. They will gain weight (增加体重) instead of losing it. You will lose more weight if you decrease your other meals.

    The plan: turn Mars into a blue world with streams and green fields, and then fill it with creatures (生物) from the earth. This idea may sound like something from a science fiction (科幻小说), but it is actually being taken seriously by many researchers.

    This suggested future for the "red planet" will be the main topic for discussion at an international conference hosted by NASA (美国宇航局) this week. Leading researchers as well as science fiction writers will attend the event. It comes as NASA is preparing a multi billion dollar Mars research programme. "Turning Mars into a little earth has long been a topic in science fiction," said Dr Michael Meyer, NASA's senior scientist for astrobiology (太空生物学). "Now, with scientists exploring the reality, we can ask what are the real possibilities of changing Mars."

    Most scientists agree that Mars could be turned into a little earth, although much time and money would be needed to achieve this goal.

    But many experts are shocked by the idea. "We are destroying our own world at an unbelievable speed and now we are talking about ruining another planet," said Paul Murdin, of the Institute of Astronomy, Cambridge, UK. Over the past months, scientists have become increasingly confident they will find Martian life forms. Europe and America's robot explorers have found proof that water, mixed with soil, exists in large amounts on the planet.

    In addition, two different groups of scientists announced on March 28 that they had found signs of methane (甲烷) in the Martian atmosphere (大气). The gas is a waste product of living creatures and could be produced by microbes (微生物) living in the red planet's soil.

    But scientists such as Dr Lisa Pratt, a biologist at Indiana University, say that these microbes will be put in danger by the little earth project. "Before we have even discovered if there is life on Mars, we are talking about carrying out projects that would destroy all these native life forms, all the strange microbes that we hope to find buried in the soil," said Dr Pratt. This view is shared by Monica Grady, a planetary scientist at the Natural History Museum, London. "We cannot risk starting a global experiment that would wipe out the precious information we are looking for." she said, "This is just wrong."

Columbia Engineering's Summer High School Academic Program for Engineers (SHAPE) is a selective pre-college program for high school students and recent graduates. SHAPE is tailored for students with a gift for STEM: science, technology, engineering, and mathematics. Each 3-week session offers college-level, project-based courses in engineering taught by celebrated professors at the university. 

SHAPE gives students a more realistic picture of what it means to be an engineer and its professional development components help students develop the skills they need to get there.

Courses

SHAPE features creative problem-solving courses and exposes students to innovative engineering techniques and knowledge presented by professors. Please note that SHAPE does not provide college credit. 

Students gain access to the famous MakerSpace and state-of-the-art research laboratories after completing the safety training and will only do so under close guidance. 

SHAPE also provides students with workshops to explore career fields, professional development, and guidance on sharpening one's college application from admissions officers. Students in the program will be visiting companies and organizations that show the classroom content in practice. 

Application

Students are selected based on the following criteria: 

⒈Strong academic record 

⒉Personal statement to demonstrate excitement and interest in STEM through engagement in challenging courses, activities, projects, etc. 

⒊Enthusiastic letter of recommendation submitted by a math or science teacher 

⒋Creative responses to two required questions and one of the three optional questions 

We encourage all students to apply by the priority deadline of June 15, 2023, so there is no application fee. After the priority deadline, a $50 application fee is required. 

SHAPE is dedicated to supporting students and their families in need of financial assistance. We offer a limited number of need-based scholarships, which cover the full cost of SHAPE. To be considered for a need-based scholarship, families will need to provide a recent pay receipt and complete a Family Income and Expense Worksheet.

Email: shape@columbia.edu for more information.