Batteries leak because the chemistry inside them never fully stops. Even sitting unused in a drawer, a battery…
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Chemistry
Why Do Batteries Leak? The Chemistry Behind the White Crust
Batteries leak because the chemistry inside them never fully stops. Even sitting unused in a drawer, a battery is a sealed can of reactive chemicals. Over time those reactions produce gas, the…
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October 30
Today in History
- 1485Henry VII crowned at Westminster Abbey, founding the Tudor dynasty and ending the Wars of the Roses.
- 1905Tsar Nicholas II issues the October Manifesto, ending unlimited autocracy in Russia and opening constitutional monarchy with an elected Duma.
- 1961The Soviet Union detonates Tsar Bomba over Novaya Zemlya, the largest nuclear weapon ever set off.
- 1974Muhammad Ali knocks out George Foreman in the "Rumble in the Jungle" in Kinshasa, regaining the world heavyweight title.
October 30
Born today
- 1735John Adams, second president of the United States.
- 1909Homi Jehangir Bhabha, father of India's nuclear programme.
- 1960Diego Maradona, Argentine football legend.
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Why Do Batteries Leak? The Chemistry Behind the White Crust
For every reader
Batteries leak because the chemistry inside them never fully stops. Even sitting unused in a drawer, a battery is a sealed can of reactive chemicals. Over time those reactions produce gas, the…
- Plain language — no jargon, every term explained
- The key numbers, with sources
- Practical takeaways and FAQs
2,432 words
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October 30
Personality of the day
Diego Maradona
Born 30 October 1960
Born on this day in 1960, Diego Maradona was an Argentine football legend.
He captained Argentina to victory at the 1986 FIFA World Cup and is widely regarded as one of the greatest footballers of all time.
October 30
Picture of the day
Photograph: Roy Egloff, CC BY-SA 4.0, via Wikimedia Commons — Picture of the day, 30 October 2026.
Did you know…
- …that people with Ebola are not infectious before symptoms appear? The incubation period is 2–21 days, typically 7–11.
- …that the licensed Ebola vaccine Ervebo targets Zaire ebolavirus — and is not expected to protect against Bundibugyo or Sudan virus?
- …that the hospital fungus Candida auris can copy its entire genome — carrying two to four complete sets of DNA — to defeat last-resort antifungal drugs?
- …that Shamonda virus was known only as an animal pathogen for sixty years, until the first documented human case in France in October 2026?
- …that antibiotic resistance killed 1.27 million people in 2019 — and could kill 39 million by 2050?
- …that agentic AI lets AI systems act, not just answer?