Science behind nature

Geoengineering proposes deliberately altering the Earth system to counter some effects of global warming, but the technologies involved are far from equivalent. Carbon dioxide removal seeks to reduce atmospheric CO₂, while solar radiation…

Antibiotic resistance is not only created inside hospitals. Wastewater, agricultural runoff, pharmaceutical pollution and poorly managed waste can carry antibiotics, resistant bacteria and resistance genes into the environment. These…

Air pollution does not respect state borders. Smoke from crop fields, emissions from industries, vehicles and dust can be carried by winds across hundreds of kilometres, while atmospheric chemistry can transform these pollutants as they…

### Excerpt > **Echolocation** is a biological sensing system in which animals produce sounds and analyse the returning echoes to understand their surroundings. Bats and toothed whales use this ability to detect objects, estimate…