Scientists Are Borrowing Nature's Best Tricks to Build Tomorrow's Technology
Nature has been running experiments for hundreds of millions of years, and some of its results are genuinely astonishing. A lizard that should have had lead poisoning is instead doing push-ups in New Orleans. A polar bear shakes off a frigid Arctic swim like it just stepped out of a warm shower. A dinosaur-era sea reptile may have hunted in near-total silence. Scientists studying these remarkable animals are part of a growing field called biomimicry — the practice of drawing on natural systems to design new technologies, medicines, and materials. The idea is simple: if evolution already solved a problem, why start from scratch?
In New Orleans, researchers studying brown anole lizards found something that stopped them in their tracks. Blood and bone samples taken from 40 lizards living in highly contaminated areas showed an average of almost 1,000 micrograms of lead per deciliter of blood. To put that in perspective, health experts say there is no safe level of lead exposure for children, and doctors would step in if a child's blood lead level reached just 3.5 micrograms per deciliter. Yet these lizards appeared healthy, performed well in speed and balance tests, and showed only minor damage to their liver and brain tissue. The lead accumulated in New Orleans soils largely from decades of lead paint and leaded gasoline, and it affects both lizards and human children who come into contact with contaminated dust and soil. Scientists believe that understanding the molecular — meaning the tiny chemical-level — mechanisms that allow these lizards to tolerate lead could open doors to new treatments for people suffering from heavy metal poisoning.
Meanwhile, polar bears have been quietly solving an engineering problem that humans still struggle with. When researchers tested polar bear fur against human hair and high-performance ski equipment, the unwashed, oil-coated polar bear fur matched or outperformed the best gear when it came to resisting ice. The secret lies in sebum, the natural oil that coats the fur. Scientists analyzed polar bear sebum and found it contains cholesterol, certain fats, and fatty acids — but notably lacks a compound called squalene that is found in the hair of humans and many other mammals. Researchers think that missing ingredient actually helps the ice-resistance work better. This matters because many current ice-repelling products rely on compounds known as PFAS, sometimes called forever chemicals, which linger in the environment and accumulate in living things over time. A nature-inspired alternative could potentially be far safer. Inuit people have known about polar bear fur's slippery properties for generations, using patches of it under sled stool legs to help them glide across ice — and now scientists are catching up with what Indigenous communities figured out long ago.
Perhaps the most dramatic discovery of the year came from a fossil found near a road construction site in Germany back in 2009. A collector stumbled on several fragments that together formed nearly a complete front flipper of a Temnodontosaurus — a massive predatory marine reptile from the age of the dinosaurs, roughly 180 million years ago. What made the find extraordinary was that soft tissue had been preserved alongside the bones, an incredibly rare occurrence. When researchers examined the flipper closely, they found its rear edge was not smooth but serrated, with tiny tooth-like projections made from cartilage reinforced with calcium. Computer simulations suggested these serrations allowed the creature to move through water almost silently, the same way specialized feathers let owls fly without making a sound. The flipper also appeared to extend beyond the skeleton's end in a flexible tip — similar to the small angled winglets you can see at the ends of airplane wings today, which reduce drag and improve efficiency. Scientists believe this ancient flipper design could inspire engineers building quieter propellers and underwater vehicles, which would reduce noise pollution in oceans where marine animals rely heavily on sound to navigate, communicate, and find food.
What connects all of these discoveries is a bigger idea: evolution is the longest-running research and development program on Earth. Lizards, polar bears, and ancient sea reptiles were not trying to help humans — they were just surviving. But in surviving, they developed solutions that millions of years of human engineering have not fully replicated. Every time a scientist figures out how one of these biological tricks works at the chemical or structural level, it becomes a potential blueprint. The real work is translating those blueprints into something useful — and researchers around the world are doing exactly that.
Source: Smithsonian Magazine