Nuclear doubts, bigger hail, and new clues about aging brains

核疑虑,更大的冰雹,以及关于衰老大脑的新线索

Science Quickly

2026-03-16

11 分钟
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单集简介 ...

In this episode of Science Quickly, we cover the record release of global emergency oil reserves amid escalating conflict, a breakdown of why nuclear experts say Iran was not close to building a nuclear weapon, new research that shows how climate change is increasing both the likelihood and size of severe hail and a study that reveals how aging gut microbiomes may impair cognitive function through the gut-brain connection. Recommended Reading: War in Iran triggers an unprecedented disruption in global oil Iran was nowhere close to a nuclear bomb, experts say The reason the Middle East has so much oil is the same reason it’s all stuck there now The gut microbiome may influence brain aging, mouse study suggests E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover! Discover something new everyday: subscribe to Scientific American and sign up for Today in Science, our daily newsletter. Learn more about your ad choices. Visit megaphone.fm/adchoices
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  • For Scientific American Science Quickly, I'm Kendra Pierre-Lewis, in for Rachel Feldman.

  • You're listening to our weekly science news roundup.

  • Last Wednesday, the International Energy Agency announced that its member countries would release...

  • 400 million barrels of oil from their emergency reserves to, quote,

  • address disruptions in oil markets stemming from the war in the Middle East.

  • This is the largest release in the group's history and the first

  • since 2022 after Russia invaded Ukraine.

  • Siam senior editor Dan Vergano is here to update us on the conflict and its oil impacts.

  • Thank you for joining us today.

  • Good to be here with you.

  • The United States has recently entered into a military conflict with Iran.

  • Donald Trump has said part of the rationale for this bombing—

  • They would have had a nuclear weapon within two weeks to four weeks,

  • and they would have used it long before this press conference.

  • You recently wrote an article for Scientific American saying that isn't the case.

  • And I was hoping you could walk us through, like,

  • why nuclear experts are saying that Iran was not on the precipice of having nuclear weapons.

  • So the administration and President Trump have made a number of statements about how soon Iran would have had a nuclear weapon

  • if they hadn't launched this war.

  • The thing is, we talked to experts in making nuclear bombs, and they said that that just ain't so.