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"Shark Week," which kicks off this week, has captivated audiences for decades with stories of these powerful ocean predators. But the secret behind their extraordinary swimming abilities lies far deeper than their impressive teeth or iconic tails—it's hidden inside their spines.

The fossilized spines of saber-toothed cats in the La Brea Tar Pits reveal evidence of an unexpectedly high prevalence of rare spinal nerve tumors, suggesting that the species became inbred just before extinction. These tumors, which cause significant pain and reduced limb functi

Plants often grow spines, thorns and prickles to defend against animals that feed on them, but why this happens in some places more than others has remained a mystery. Research in New Phytologist shows that plant spininess is shaped by browsing mammals, both past and present, tog