YouTube routinely experiments with new features on its Premium tier, and its latest test involves a sleep timer that pauses the video after, well, a set period of time. It’s not an earth-shattering ...

If you're someone who goes to bed in total silence each night, it might seem weird that a service like YouTube is adding a sleep timer. You watch YouTube videos when you're awake, not when you're ...

For the first time, scientists have recorded brain activity in a free-ranging, wild marine mammal, revealing the sleep habits of elephant seals during the months they spend at sea. The new findings, ...

When it comes to ocean diving, no seal can compete with the elephant seal. While on the hunt for their deep-dwelling squid and fish prey, these blubbery behemoths hold their breath for up to two hours ...

The ocean is full of weird and wonderful things, and as a general rule, the deeper you go, the weirder it gets. Thanks to research published in Science on Friday, we can add freefalling elephant seals ...

Elephant seals drift downwards in a "sleep spiral" when deep diving in the ocean, a new study found. Sleeping while deep diving allows the seals to avoid predators, scientists believe. The scientists ...