CityU-Learning Classroom for Secondary School Students

Humans have always lived by the sea. They have derived their livelihood from it by fishing and trading. It is no surprise that, sooner or later, some have claimed ownership and control over parts of the sea. In our day and age, can anyone own the sea? If yes, which parts of the sea can they own? Most of all, who owns it? This presentation will discuss these aspects by reference to some on-going disputes concerning control over maritime areas, such as the dispute relating to the South China Sea.

In this talk I will discuss how the quest of structure of an atom has led to discovery of quantum-mechanical laws, which completely changed our view of the universe. I will also discuss how the exotic properties of quantum mechanics such as superposition and entanglement are used in secure communication as well as quantum computing.

在本報告中我將從對原子結構的探究講到量子力學定律的發現，從而徹底改變了人類的世界觀。我還將敘述量子力學的奇異特性，例如疊加和糾纏，是如何在保密通信和量子計算中得到應用的。

We use smartphones to take photos and videos all the time, but how do we make a mini-film? How do we decide on what to include in the frame? How should we tell stories through our films? We will explore how to make a little film like a filmmaker during the workshop.

A dripping faucet is a seemingly ordinary, everyday thing. If you look closely, you will find a stream of water flowing from the faucet and breaking into droplets. But have you ever asked yourself what the shape of a water droplet is? If you squeeze a drop of water out of a water bottle on the International Space Station, you will find that the droplet forms a perfect sphere. This is because of the surface tension. In today's talk, I will show you that it is possible to create non-spherical water droplets by using tiny particles. The idea behind it is the so-called interfacial jamming. By using this concept, we can make all kinds of liquid structures and liquid-based devices. After the lecture, we will invite all participants to our campus tour. During the campus tour, you will see how we make and study these "strange" droplets.

Water scarcity together with stringent regulations necessitate considering unconventional water resources such as seawater, hypersaline water and wastewater or developing new technologies to solve Pressing Water Issues. In this talk, we will discuss how technologies bring us to new journey to turn such unconventional water resources into drinking water.

Cancer, as we understand by now, is an extremely complicated disease. A malignant tumor usually possesses hundreds of different mutations in its genome. If we compare two tumors, their profiles of mutated genes are far from identical. Therefore, every tumor is unique. An ever ongoing effort of scientists is to reduce the huge complexity of cancers by deciphering the molecular and cellular traits that facilitate the transformation from a normal cell to a cancer cell. By answering the 'how does cancer happen' question, we hope to gain insight into the things that go wrong in a cancer cell and develop therapeutics accordingly.

The basic concept of atomistic modelling of materials, which include physics and chemistry that F.4-F.6 students have encountered, will be introduced.

This is a chemistry practical session on preparing a hand cream from water, oils and surfactants.

You are a member of a lunar exploration crew originally scheduled to rendezvous with a mother ship on the lighted surface of the moon. Due to mechanical difficulties however, your ship was forced to land at a spot some 200 miles (320 kilometers) from the rendezvous point. To survive, you and your team now have to make a series of decisions at a critical moment...

Globally, the proportion of older people has been growing faster than any other age group. Although increased longevity is one of the greatest triumphs in the 21 ^st century, global aging has challenged the sustainability of health and care systems worldwide. Rising demand for health and social care services from a rapidly aging population and the continuing shrinkage of the workforce require innovative responses. This lecture will first provide an updated picture of the demography and profile of the aging population in Hong Kong and discuss the challenges related to the rapid demographic changes. This lecture will also highlight the opportunities in the aging society from productive and healthy aging perspectives. Several local and international innovative responses to the rapidly aging population will be illustrated.