How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track your performance on your phone.

    The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.

    The toothbrush will be able to teach you to brush right (don't forget the insides of the teeth!) and make sure you're brushing long enough. “It's kind of like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.

    The toothbrush will also be able to talk to other applications on your phone, so developers could, for instance, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. “We try to make it smart but also  fun,” Several says.

    Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.

    The company says the Kolibree will go on sale this summer, for $99 to $199, developing on features. The U.S. is the first target market.

    Serval says that one day, it'll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush.

    Harvard researchers have created a tough, low-cost, biodegradable (可生物降解的) material inspired by insects' hard outer shells. The material's inventors say it has a number of possible uses and someday could provide a more environmentally friendly alternative to plastic. The material, made from shrimp ('虾) shells and proteins produced from silk, is called "shrilk." It is thin, clear, flexible and strong.

    A major benefit of the material is its biodegradability. Plastic's toughness and flexibility represented a revolution in materials science during the 1950s and '60s. Decades later, however, plastic's very durability (耐用性) is raising questions about how appropriate it is for one-time products such as plastic bags, or short-lived consumer goods, used in the home for a few years and then cast into a landfill where they will degrade for centuries. What is the point of making something that lasts 1,000 years?

    Shrilk not only will degrade in a landfill, but its basic components are used as fertilizer(肥料), and so will enrich the soil.

    Shrilk has great potential, the inventors said. Materials from which it is made are plentiful in nature, found in everything ranging from shrimp shells, insect bodies to living plants. That makes shrilk low cost, and its mass production possible should it be used for products demanding a lot of material.

Work on shrilk is continuing in the lab. The inventors said the material becomes flexible when wet, so they're exploring ways to use it in wet environments. They're also developing simpler production processes, which could be used for non-medical products, like for computer cases and other products inside the home. They're even exploring combining it with other materials, like carbon fibers, to give it new properties.

Best Smartphone Games To Put Your Brain To Test

    I am a fan of blood shedding MMORPGs. But sometimes I play brain games. Here are four games for you that will surely put your brain to test.

    Real Chess

    Chess has been bursting brains for over 14 centuries, and this virtual variant of chess really brings a new taste. It's a 3D virtual chess that lets you play with users from all around the world.

You can chat with opponents, play with AI, get newbie tips and much more. The animations and 3D structures are really cool as well.

    Juice Cubes

    Juice Cubes is a light and colorful game full of fruity juice cubes that you need to connect to pop and clear levels. There are multiple types of challenges, powerups, and over 550+ levels to keep you addicted.

    It might seem easy at the start, but it will burst your brain when you reach higher levels.

    WordBrain 2

    A really fun word game where you need to guess words based on the number of letters provided. Each word puzzle has a theme category, such as food, human body, color, or even space.

    And you can also use hints to solve the level when you get stuck. Your vocabulary is sure to be challenged in it.

    Puzzlerama

    Puzzlerama basically joins some of the top puzzles in one single app, making it a perfect app for puzzle lovers. It lets you play popular puzzle games such as flow, jigsaw, unblock, pipes, tangram, and more. There are hundreds of levels available for each puzzle type and things get really tough as you advance.

    The game interface is also very colorful, and smooth animations make the game fun to play.

    A Harvard study of their graduates over thirty years found that there were only a small percentage (3%) of them who actually wrote down their goals-and these were the most successful! You can be certain that every one of those students had repeatedly heard the value of goal setting. Yet only 3% actually wrote down their goals consistently. Imagine what you can do if you both write down your goals and, then, focus on them consistently, until they are accomplished!

    What is it that causes the "New Year's Resolution Syndrome"? People make resolutions, work hard at them for a few weeks, maybe even a few months, and then forget them. Next year, they make the same New Year's resolutions. That is the syndrome. So why do so many people do it?

    They may be making goals that are too global, and too unrealistic. The elephant analogy (比喻) is still the best one I know of to illustrate good goal setting. "How do you eat an elephant? One spoonful at a time." So it is with goals. Make spoon size goals and accomplish them easily. Once you've mastered this, get a bigger spoon!

    You may have too many people in your life who consciously or subconsciously are unwilling or unable to support you to reach your goals. Surround yourself with people who want you to have what you want for yourself. Support each other and you'll all achieve your highest goals.

    We must be careful not to confuse busyness with progress. Be selective about how you use your time and what you focus on. Success often comes when you know what to leave out, rather than what to include in your life.

    Goal setting is like the pig and chicken who were out for a walk in town early one morning. The chicken became really excited when she saw a sign that said "Ham & Eggs, $2. 99". She said to the pig, "Look, we've got double billing again." The pig grunted and said, "That's all right for you to say. For you, it's all in a day's work. For me, it's total commitment." Goal setting is all in a day's work. Goal achievement is total commitment.

    What will restaurants look like in the future？What would your dinner taste like if a robot cooked it？A robot restaurant in Tianjin may give you the answers.

    Covering an area of over 400 square meters with a total of 112 seats, the X Future Restaurant is a robot restaurant opened in November 2018. The restaurant has amazed customers with its fully-automated(全自动的)technology, which covers every step of the dining experience, from ordering to cooking to serving the dishes and even taking payment.

    Entering the restaurant, one can order dishes by simply scanning(扫描)the QR codes on the table. There are over 40 choices of dishes. After taking the order, "robot cooks"prepare dishes using fixed time, temperature and ingredients designed by famous Chinese cooks.

    "As the cooking is controlled by a computer system, the taste and quality of dishes can be good, "said Li Xiaokui, manager of the X Future Restaurant.

    Robots also complete the delivery of dishes. Without following any designed route, the robot waiters serve meals thanks to automated driving technology, which helps each robot timely change its route when something is in the way.

These eye-catching technologies have received wide praise from customers. "The dishes taste surprisingly good. I couldn't believe that they were made by robots, especially dishes that were difficult to cook" one customer said. "The application of robots has increased our efficiency(效率)and cut down our costs, "Li said, "I think robot restaurants will develop fast and have a bright future. "

As part of our mission to inspire the next generation of scientists, inventors and engineers, the Science Museum Group (SMG) has launched an exciting new online game—Total Darkness.

Over the last year we have been developing Total Darkness with the aim of creating an experience that can have a positive impact on people's attitudes towards STEM (science, technology, engineering and maths), as well as having a focus on self-reflection, rather than asking players to recall specific facts or concepts.

Total Darkness is a digital storytelling experience which encourages young people to recognise how the skills they use every day relate to STEM and can help them develop their confidence in science thinking. The game invites the player to solve a mysterious power cut in their hometown. The game puts players in control, allowing their choices and decisions to guide them through the story.

As the player navigates through the darkened streets of the town, equipped only with a torch, they will face various challenges. Using their curiosity, communication skills and creative problem solving, they will discover new theories about what might have caused the blackout(停电；断电). But with every step their torch fades, and the player must solve the mystery before the battery runs out.

The player's choices and actions throughout the game will score them curiosity, creativity or communication points. At the end, the skills the player has used will be revealed along with their science style, showing how they could put their skills into action in the real world.

Total Darkness is aimed at 8-15 year-olds—an important stage in teens' science development. Research shows that as teens make the step between primary and secondary, many move away from an interest in science as other influences have a stronger pull in their lives.

Total Darkness is a free online game playable on smartphone, tablet and desktop. Play now at totaldarkness.sciencemuseum.org.uk.