Why are virologists anxious about avian flu jumping from birds to cows?

We didn't anticipate this happening where age 5 in one could possibly jump from wild birds into cows, that's completely original.

It's Friday, April 19th and you're listening to Science Friday. I'm Cyfry producer Deep Peter Schmidt. You've probably heard about an alarming case of

avian flu that's jumped from wild birds to poultry to cattle in eight states and now to one dairy worker

But that same avian flu has been spreading through wild bird populations for years and it's led many farmers to drastic measures to contain the spread of the virus.

So where are those efforts at and what does that mean for the rest of us?

But first guest host John Dankowski breaks down the biggest news in science this week.

Monday is Earth Day and we wanted to highlight a few positive trends and some promising solutions to the climate crisis.

You know, it's easy to feel pessimistic about the

future of our planet and though there's so much more to do, we have made some

key strides. So joining me now to talk about this and some other top science stories of the week is my guest

Casey Crownhart, Climate Reporter at MIT Technology Review, she's based in New York City.

Welcome back and happy almost Earth Day Casey.

Happy almost Earth Day, John, happy to be here.

Yeah, I'm glad you're here.

So let's start with electric vehicles.

Their growth has really exploded, right?

Just in the past few years? Absolutely. I think it's just kind of wild to think about, you know, just a few years ago, these were such a niche thing and now globally

about one in five new vehicles sold last year were electric either

fully battery or plug-in hybrid. So it's just kind of wild to see how quickly this has

become such a normal thing on the roads. Yeah, such a normal thing, of course, you know,

EVs have their own problems,

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