疾病是人類有史以來最大的敵人，疾病所造成的傷亡人數多於歷史上任何戰爭。時至今日，人類仍然需要不斷抵抗疾病。我們會分享三位致力對抗疾病的中國科學家的故事，他們的研究包括精準基因編輯、創造新的動物模型開發新藥治療阿兹海默症及柏金遜症、找出空氣污染與腎病的關係，以及以再生量身訂造的器官爲目標的幹細胞研究。他們的努力有機會改善全球人口的生活。

Our war on disease, is one that’s been fought throughout human history.  It’s killed and maimed more people than any other conflict, and continues to challenge us. This is the story of three Chinese scientists who are working on the frontline of our battle with disease. From precision gene editing to create new animal models for testing novel drugs designed to defeat Alzheimer’s and Parkinson’s disease, to the scientists working to combat kidney disease by tackling air pollution, and cutting edge STEM cell research that promises to grow brand new, tailor-made organs to replace those damaged by disease; these ambitious goals have the potential to improve lives across the globe.

過去數十年間，不同的全球定位系統衛星陸續加入環繞地球軌道的行列，但中國名叫北斗的新型衛星網絡，設計上特別為自動駕駛車輛作出考慮，利用了氫鐘大幅提高其精確度。但這些導航及通訊用的衛星網絡，曝露於太空中時而受太陽噴發出的高能粒子威脅，不免令我們的日常生活倍受太空天氣影響。因此，中國與歐洲太空總署聯手把SMILE 衛星送上地球極地上空的軌道，研究太陽風暴對衛星的潛在影響。另一邊廂，中國由２０００年代初起運作的探月計劃，歷年來已送了各兩顆衛星到月球軌道以及月球地表，當中更包括一輛月球車到月球背面的艾托肯盆地，成為人類航天史上的創舉。中國期望能在這些衛星所收集的月球樣本到手後，開展載人登月任務，正式進入新一輪的宇宙競賽。

Constellations of global positioning system satellites have been orbiting the Earth for decades, but China’s new satellite network called BeiDou, which harnesses atomic hydrogen clocks for extra precision, has been built with the new age of self-driving cars in mind.   These networks of satellites for navigation and communication, make our lives increasingly susceptible to space weather; the large outbursts of charged particles which the Sun periodically hurls towards Earth.  So China has teamed up with the European Space Agency to mount a mission that will orbit the Earth’s polar regions, to shed light on how such Solar Storms might affect future satellites. China’s Moon exploration program, in operation since the early 2000s, has now placed two satellites in lunar orbit, and two more on the Moon’s surface; including a robotic rover in the ancient Aitken Basin the lunar far side; a first in spaceflight history.  A Moon sample return mission is next, and China hopes human explorers could follow.  Welcome to a new race for space.

科學在過去數百年皆是最能推動社會改變的力量，當中不少進步也是來自純科學研究，皆在追求知識，非以應用價值為考慮。在此單元我們將介紹三位投身純科學研究的中國科學家，細看他們眼中的深空、深海以及原子世界：先回顧興建世上最大型、將能令人類已知脈衝星數目翻倍的無線電望遠鏡的艱巨過程，然後來見證建造位於南中國地底深處、敏感度足以測量次原子粒子質量的微中子探測器所面對的重重挑戰，最後我們將跟隨航海工程師兼潛水員闖進深海，一看他如何研發尖端新型潛艇，讓科學家能定期探索前人未至的深海水域。

Science is the driving force that’s changed society the most in the last few centuries.  Many of these advances have come from pure science research, done simply in the pursuit of knowledge, without applications in mind.  This is the story of three Chinese scientists who’ve devoted their lives to pure scientific research; looking deeper into the Cosmos, the ocean, and the atom. We reveal just what it took to build the world’s largest radio telescope; set to double the number of pulsars discovered in our galaxy. We follow the challenges of constructing the world’s most sensitive neutrino detector, deep underground in Southern China, that’s designed to measure the mass of these elusive subatomic particles. And we dive to the deep ocean with an aquanaut and marine engineer, who’s creating a new type of submarine for regular trips to the largely unexplored deep sea floor.