The following is part of an interview between Professor Bernard Feringa (a Nobel Price winner) and a CNN reporter. 

Q: You often say that universities should be playgrounds. How can we make sure that this is a case? 

A: I'm a strong believer in challenging students at all levels — to think, to discover and to go beyond the current knowledge. The universities have a special role here, because academic training and science should go beyond the current horizon. I think that we shouldn't forget that we shouldn't train our students for today or tomorrow; we should train them for 10 to 20 years from now. Because then they will be the innovators in our society, and they will be the persons that make a difference. Train our students for future means that they have to be able to surpass the border of our current knowledge. This is what I mean with playground. I mean that you have sufficient space to think, to discover and to be free to make mistakes, but in particular to make the next steps, be creative and not limited by what should be done. A lot of things happen by accident and suddenly you get a major breakthrough or new insight. Schools should encourage students to ask questions and be creative. 

Q: What is it that you like so much about teaching? 

A: I really enjoy the transfer of the beauty of knowledge: insights, questions, things that we don't know, or the limitations of what we know. I never get tired of my job. I think that you share with your students the opportunity to transfer some knowledge, but also get a lot of things back by asking questions and discussing. Across all fields, from natural sciences to humanities, you have knowledge and insights built upon generations and decades. At the universities we have to transfer a lot of knowledge and teach students the basic skills and techniques. But it's also our duty to go beyond that — to ask them questions about what we don't know and what improvements we can make for the future. Doing surgery in the hospital now might be taken over by robots in the future. How are we going to deal with that? Or will we be able to make fuel for airplanes? These are challenging and tough questions but to share those with the students is really nice. Most of all, I think the beauty of knowledge and the excitement of insights and discoveries is fantastic.

Topher White spends a lot of time walking in the forest and thinking about how quickly we're losing it. He is making an effort to stop global deforestation (滥伐). Founder of the San Francisco— based Nonprofit Rainforest Connection, White has developed a simple but ingenious' strategy: using old cell phones to listen for the sound of destruction.

Forests are disappearing worldwide and fast, which not only harms wildlife, including many species that live nowhere else, but also contributes to climate change. "I didn't know any of this stuff when I started," says White, who began his journey in 2011, when he traveled to Indonesian Borneo to help decreasing gibbons (长臂猿).

Between 50 and 90 percent of the logging (采伐) that happens in the world's rain forests is illegal, according to White, yet detecting that activity can be tough. So he has developed a system in which he uses a cell phone staying charged by solar cells and an extra microphone. From there, the device can detect the sounds of chainsaws (电锯) nearly a mile away.

Because it's unfeasible to have people listening to the devices all the time, he added some "old-school data analysis," so that the cell phone's computers can distinguish a chainsaw's sound from others in the forest. This way, his device can automatically detect logging activity and send a text alert to authorities who can determine if it's illegal and then stop it.

So far, his monitoring system has been used in Cameroon, Ecuador, Peru, and Brazil and will soon be deployed in Bolivia. It's not just about listening for logging. Also, it can pick out the sounds of specific birds, which is why White sees the forest recordings as a potential science tool. He is urging biologists and ecologists to use his monitoring system anywhere, whether it's a remote .forest or a park in London. "The more we learn about these places," he says, "the easier it will be to protect them."

If you love chocolate，maybe you have eaten a bar of Cadbury's Bournville chocolate. But Bournville isn't just the name of an English chocolate bar. It's the name of a village which was built especially for workers at the Cadbury's chocolate factory.

George and Richard Cadbury took over the chocolate business from their father in 1861. A few years later, they moved the factory out of the centre of Birmingham, a city in the middle of England, to an area close to the railways and canals so that they could receive milk deliveries easily and send the finished products to stores across the country. More importantly, here, the air was much cleaner than in the city, and the Cadbury brothers thought it would be a much healthier place for their employees to work.

They named the site Bournville after a local river called “The Bourn” and “Ville”，the French word for town, was used because at the time, people thought French chocolate was the highest quality. The new factory opened in 1879. Close to it, they built a village where the factory workers could live. The Cadbury brothers thought their workers deserved to live and work in good conditions. In the factory, workers were given a fair wage, a pension and access to medical treatment. The village provided everything that workers needed including a shop，a school and a community centre where evening classes were held to train young members of the workforce.

The Cadbury brothers were among the first business owners to make sure that their workers had good standards of living. Soon, other British factory owners were copying their ideas by providing homes and communities for their workers designed with convenience and health in mind.

Today, over 25,000 people live in Bournville village. Over a hundred years since the first house here was built, the aims of its founders have still been carried out.