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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

The Arctic is warming twice as fast as the rest of the planet, meaning more and more sea ice is melting every year.

It's really concerning the rapid loss of sea ice out there for a lot of reasons.

Tracy Goldstein, a researcher and conservationist at UC Davis. She says one of those reasons is animals

like ice seals need the ice to haul out on and give birth. Another reason, as the Arctic

warms, the fish the seals eat, may be moving to deeper and colder waters, so the seals have

to travel farther to hunt them. So the combination of all of that over time is probably going

to affect their health and their

body condition, and that will make them not just underweight, but also more susceptible to other

diseases. And those diseases may also be encroaching upon Arctic marine mammals because,

spotting a trend here, Arctic sea ice is melting. Totally unintended consequence of all of that.

But yes, you know, when there used to be an ice bridge,

certain populations would remain separate from each other,

and so they couldn't come in contact and give each other,

you know, their bacteria, viruses, etc.

But once those channels started to open,

animals were able to move further

...