Frogs Come Alive After Winter Thaw | National Geographic

less than 1m read

·Nov 11, 2024

NARRATOR: While the rivers and ponds are melting, the ground remains frozen. And under the leaf litter, someone is pulling off a miracle. [intriguing music] This wood frog is frozen solid. Even his eyes are iced over. There's no pulse, no breath. Slowly the warmth of spring begins to thaw, from the inside out. His heart starts beating. [dramatic music] His brain lights up-- [intriguing music] -- and he begins to move. It turns out that the frog's liver pumped a syrupy, natural antifreeze into his cells in the fall. It kept his organs from freezing. Only the water between cells froze. After eight months frozen, he's completely undamaged, and leaping straight for the nearest pond. [water splashing] Now, Alaska's least welcome yearly arrival slowly bursts from its watery home-- the mosquito. [intriguing music] And it immediately wants blood. Not even cold-blooded frogs are immune. The number of mosquitoes here far outstrips that in any jungle on earth. [music continues] [water splashing] [mosquitoes buzzing]

The Element That Could Kill Billions but Save Millions

Free Will: be glad you don't have it

View All

James Manyika on how the pandemic has accelerated the future of work | Homeroom with Sal

Hi everyone! Welcome to our daily homeroom. I’m very excited about the guest we have today. Before we jump into that conversation, I will give my standard announcement. I want to remind everyone that Khan Academy is a not-for-profit organization that can…

Modeling with multiple variables: Pancakes | Modeling | Algebra || | Khan Academy

We are told that Jade is making pancakes using flour, eggs, and milk. This table gives the cost per kilogram of each ingredient and the amount in kilograms that Jade uses. All right, the total amount Jade spends on ingredients is six dollars. Write an eq…

The Trouble with the Electoral College

In a fair democracy, everyone’s vote should count equally, but the method that the United States uses to elect its president, called the electoral college, violates this principle by making sure that some people’s votes are more equal than others. The Ele…

Dividing whole numbers by decimals examples

Let’s say we want to figure out what eight divided by four tenths is. Pause this video and try to figure it out on your own before we do it together. All right, now one way to approach this is to think about everything in terms of tenths. And why tenths,…

Science, technology, and the environment | High school biology | Khan Academy

So I really liked a snack, and one of my most favorite snacks of all time happens to be bananas. I mean, you can have them in a smoothie, with some peanut butter, on some toast—in any way, really. Usually, like most people, I just throw away the peels aft…

The 5 Investing Strategies to make the MOST Money

What’s up, you guys? It’s Graham here. So I think it’s pretty obvious if you invest your money, you want to make as much money back as you possibly can. Because there’s so many different ways to invest, I want to focus on the most important points that ar…

Frogs Come Alive After Winter Thaw | National Geographic

More Articles