Spring Festival (Chinese New Year) is a weeks-long season of family reunions, intense travel, red decorations, fireworks, and time-honored traditions—from the reunion dinner and red envelopes to taboos, lucky numbers, and the Lantern Festival finale.

Expect crowded transport, many closed shops, and lively temple fairs; plan travel early, learn greetings like “Xin Nian Kuai Le,” bring a small gift if visiting a home, try offered foods, and be respectful of local customs.

The sun is often thought of as a burning ball of fire, but the reality of its energy production is far more fascinating. This episode explores how the sun's heat and light are generated through the process of nuclear fusion, which occurs in its core. Discover the science behind this immense energy source, where hydrogen atoms fuse to form helium, releasing vast amounts of energy essential for life on Earth. This process defies the typical notion of burning we are familiar with on Earth, making the sun a unique powerhouse that has fueled our planet for billions of years and will continue to do so for billions more.

Learn about the sun's structure and the journey of energy from its core to Earth, illuminating the key role it plays in sustaining life through photosynthesis and climate regulation. This episode provides a deeper understanding of the sun's life cycle and the elements driving its incredible power.

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The Sun “burns” not because of a traditional fire, but due to the nuclear fusion process happening in its core. Hydrogen atoms fuse to form helium, releasing vast amounts of energy in the form of heat and light. This process, driven by extreme temperatures and pressures, powers the Sun and makes it a crucial energy source for all life on Earth. Understanding the Sun’s energy production helps explain not only why it burns, but also the vital role it plays in sustaining life on our planet.

Where Does Water Come From?

Photosynthesis is a process that allows plants, algae, and some bacteria to convert light energy into chemical energy, which they use to fuel their growth. Through photosynthesis, these organisms absorb sunlight, carbon dioxide (CO2), and water (H2O) to produce glucose and oxygen. This process is critical for life on Earth, as it forms the foundation of the food chain and provides the oxygen we breathe. But what if humans could also perform photosynthesis? Is it possible for humans to harness the power of sunlight for energy, just like plants do?

From their humble beginnings in ancient China to the awe-inspiring global displays of today, fireworks have come a long way. What started as an accidental discovery has transformed into an intricate blend of art, chemistry, and engineering. As fireworks continue to evolve, their rich history reminds us of the creativity and craftsmanship behind each explosion of light, color, and sound that captivates our hearts and imaginations. Whether it’s a simple sparkler or a grand finale over a city skyline, fireworks remain one of the most enduring and exciting forms of celebration.

Paper is one of the most ubiquitous materials in our everyday lives. From books and newspapers to tissues and packaging, we interact with paper constantly. But have you ever wondered how paper is made? The process of transforming raw materials into the smooth, flexible sheets we use today is a fascinating journey that combines nature, technology, and craftsmanship.

The Origins of Paper

The story of paper dates back over 2,000 years, originating in ancient China around 105 AD. Cai Lun, a court official, is often credited with the invention of paper as we know it. He combined plant fibers such as mulberry bark, hemp, and rags with water to create a thin sheet of material that could be written on. This invention revolutionized communication, education, and record-keeping, setting the stage for paper to spread to the rest of the world.

If you’ve ever gazed up at the night sky, you’ve probably noticed the twinkling of stars. This celestial phenomenon, often referred to as “stellar scintillation,” has puzzled observers for centuries. The bright flashes, fluctuations in intensity, and apparent changes in color make stars seem to blink or shimmer, but what exactly causes this effect? The answer lies in the atmosphere of Earth and how it interacts with light coming from distant stars.