A traditional way to manage extreme temperatures
As India grapples with longer, more frequent and more severe heatwaves, access to cooling or even a refrigerator remains out of reach for millions. In New Delhi, many households rely on the matka – a traditional clay pot that uses evaporation to keep water cool. It’s an affordable alternative for homes without refrigerators.
The $1 trick cooling India’s hottest citiesTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoThe same centuries-old principle is now inspiring modern solutions such as CoolAnt, a terracotta-based cooling system that lowers air temperatures in interior spaces, using water and natural airflow. Supporters say such low-cost, energy-efficient technologies could help vulnerable communities adapt while reducing dependence on air conditioning.
Home medical tests that don't hurt animals
A German start-up has developed what it says is the world's first pregnancy test made without antibodies from animals such as rabbits or mice, the test uses marine microalgae.
