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Is it just me or does it feel like there have been a lot of food recalls lately?

We live in a system of probability.

We can only have a certain level of confidence that the food supply is safe.

It's Friday, December 13th, and you're listening to Science Friday.

I'm SciFri producer, Rasha Iridi. It seems like every day there's a new food recall.

Granola bars here, veggies is there, but are instances of food recalls actually going up or does it just feel like it?

Later in the episode, a food scientist will walk us through the ABCs of a food recall, and if there's actually been a wave of them this year.

But first, let's check in on this

week's Science News. Here's Safarize Kathleen Davis. There's still a lot to be learned about the

physics of our universe. And one of the most perplexing ideas is an observation made around a

decade ago that the universe seems to be expanding faster than it should be.

Now, two years of James Webb Space Telescope data back up that finding.

Joining me now to talk about that and other topics from the week in Science News is Casey Crownhart,

climate and technology reporter at MIT Technology Review.

Welcome back to Science Friday, Casey.

Thanks so much. Great to be here as always. Great to have you. So explain this story to me.

The universe is expanding too fast. What does that mean? I know. This one, as most space stories do,

broke my brain a little bit. So basically, there are a

couple of different ways that we can kind of measure or observe how fast the universe is expanding.

One of them is by kind of looking back at the earliest light from just after the Big Bang,

basically, and then doing calculations based on our understanding of

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