From one tiny hatchling among thousands, we follow Brutus, a Saltwater Crocodile on his 50- year ascendancy to become top croc. Drawing on his great lineage, avoiding predation, defying challenges from rivals, making great ocean voyages, conquering a prime billabong, siring many offspring, Brutus reaches his zenith, only to become the most hunted croc in the Top End of Australi...
每个人都有一把独特的嗓子，反映我们的思想和情感。科学家发现人类的声音就如指纹一样，每个人都不同，而人类会透过声音去拣选朋友、情人、领袖，所以声音对人际关係起了决定性的作用。《人声的奥秘》会剖析人声如何形成、如何反映人的各种情绪、以至影响人与人之间的沟通。节目更会探讨现时最新的电脑彷製人声技术，细看科学家如何为电脑及机械人增添人性化的声音。然而直至现时为止，尚未出现一种可以由机器自主表达人类複杂情绪的智能声音，即使将来这方面的技术成熟，又是否代表机器可以取代人声所独有的感染力？
As cameras follow a family of koalas on an Australian island, a look is taken at the herbivores' unique bond with the eucalypt trees, and while the plant is poisonous to most other mammals, the marsupials rely on the trees for mating, food and more.
