Why Darwin's Idea Still Matters

Darwin's idea still matters because evolution is not only about the distant past. It helps explain the living world now. It helps scientists understand antibiotic resistance, crop breeding, conservation, viruses, animal behaviour, genetics, and the relationships among species.

When bacteria become resistant to a medicine, natural selection is often involved. Some bacteria may already have differences that help them survive the medicine. If the medicine kills the others, the resistant bacteria can multiply. This is why doctors and patients must use antibiotics carefully.

Evolution also matters for conservation. If habitats change too quickly, species may not have enough time or variation to