This week, research into the evolutionary origins of kissing has revealed that our ancient ancestors were smooching around 21 million years ago, new footage may be the first evidence of wild wolves using tools , and 14,400-year-old paw prints are the world’s oldest evidence of humans living alongside canine companions . Finally, we share an exclusive clip from Apple TV's upcoming Prehistoric Planet: Ice Age , and explore how the woolly mammoth was able to “hear” through its feet . The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

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First-Ever Look At Neanderthal Nasal Cavity Shatters Expectations

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