Explore every episode of the podcast 60秒冷知識

Did you know that the first electronic hearing aid in the world was invented because of friendship?

In 1898, an American inventor named Miller Reese Hutchison wanted to help his friend Lyman Gould, who became deaf after getting sick as a child. Even when steamboats made super loud noises, Lyman couldn’t hear them at all.

Miller spent four years studying hearing and invented the very first portable electronic hearing aid, called the ‘Akouphone.’ It used a carbon transmitter to make weak sounds louder—kind of like how a microphone works today! Although his friend still couldn’t learn to speak, Miller’s invention helped him hear more of the world around him.

Fun fact: the invention was inspired by telephone technology, because telephones could already make sounds louder or softer.

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世界上第一部便攜式電子助聽器，因為友情而發明出來的。

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訓練導盲犬時，最困難嘅就係要教佢哋喺『絕對服從』同『保護主人』之間搵到平衡。

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Did you know that guide dogs are actually trained to ‘smartly disobey’ their owners?

This is called ‘Intelligent Disobedience.’ It means when an owner says ‘forward,’ but the guide dog sees danger - like a car running a red light or a deep hole ahead - the dog will refuse to obey the command to keep their owner safe!

The hardest part of training guide dogs is teaching them to find the balance between ‘always obeying’ and ‘protecting their owner.’ They need to learn when they should listen and when they should stick to their own judgment.

And guide dogs also remember places they visit often! Some guide dogs can even take their owners to swimming pools or coffee shops without any extra directions.



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歷史倒帶：月餅曾經係推翻政府嘅秘密武器

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Did you know that your lungs are the only organs in your body that can actually float on water?

If you were to take healthy lungs and place them in water, they would float just like balloons because lungs contain about 300 million tiny air sacs called ‘alveoli’ that are filled with air, making them less dense than water.

However, if lungs are diseased - say with pneumonia or pulmonary edema - the alveoli fill with fluid, and the lungs would sink to the bottom. That’s why forensic scientists sometimes use the ‘lung float test’ to determine if a person’s lungs were healthy before death.

Fun fact: your left lung is actually 10% smaller than your right lung to make room for your heart! We breathe about 23,000 times per day, but our lungs maintain their ‘buoyancy’ throughout.


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你知唔知道，肺係身體入面唯一可以浮喺水面嘅器官？

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原來呢部手機嘅 IPX8 防水測試背後原因令人暖心嘅！


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你知唔知道，連古時科舉考試都一定要避開農曆七月，點解！？

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汽水最初係藥房發明嘅藥水？點解汽水又叫Soda!！？

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小朋友每年暑假放響7-8月，其實唔係因為天氣熱，咁係因為咩呢！？


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海洋中有種常見生物竟然有三個心臟？

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世界上第一張交通罰單（牛肉乾），竟然係因為超速8英里/小時（約13公里/小時）而發出？

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你知唔知道，你屋企廚房嘅有樣嘢，其實比廁所板更加污糟？

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今日分享一個小朋友一早知但大人好多時唔記得嘅有趣事實。原來海星其實冇腦嘅⋯⋯


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你知唔知道，火唔單止可以燒嘢，佢仲會『呼吸』？

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你知唔知道，新加坡自1992年起禁止入口同販賣香口膠？呢個禁令嘅起因竟然係跟地鐵有關？！

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你知唔知道，有地方真係僱人睇極光？呢份工叫“北極光觀測員”（Northern Lights Spotter）

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勝負往往決定於細節，F1 賽車如何做到極速換軚傳說！？

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今次唔係講馬可以企住瞓覺咁簡單啦⋯⋯🐎

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點解香港九巴嘅第一批雙層巴士竟然要等到1949年先正式上路呢？

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睇落颱風周圍狂風暴雨，但喺颱風中心—風眼，竟然風平浪靜、萬里無雲！仲有，嗰度嘅氣溫可以比外圍高出多達10°C，就好似被焗住似嘅暖爐咁

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阿仙奴熱刺呢對北倫敦世仇有咩恩恩怨怨呢！？

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去到日本，發現東京同大阪大家企扶手電梯嘅位置有大不同，點解呢！？

利物浦最近奪得嘅英超冠軍，竟然完成咗一條斐波那契數列（Fibonacci sequence）？

搭電梯其實係世界上最安全嘅交通方式？

蜜糖係唔會變壞嘅？