Articles by Sadie Witkowski

Pack rats near their nest, or midden, in the City of Rocks National Reserve in Idaho.

From Ancient Seeds to Scraps of Clothing, Rats' Nests Are Full of Treasures

Material gathered and preserved in a pack rat's midden helps researchers open new windows on the past

With the snap of his fingers, Thanos wiped out half the life in the universe.

If Thanos Actually Wiped Out Half of All Life, How Would Earth Fare in the Aftermath?

The aftereffects of such a mass extinction don’t require a supervillain’s intelligence to understand

Fifty years after researchers dismissed the idea of learning while you sleep, we now know that sound and smell cues can reactivate memories during this time of rest.

Sleep-Learning Was a Myth, But You Could Strengthen Memories While You Snooze

Neuroscientists find that sound and smell cues could solidify lessons you learn during the day

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