HumansOur cities are driving evolution and it's not all bad newsUrbanisation may be overrunning our planet, but in his book Darwin Comes to Town, evolutionary biologist Menno Schilthuizen seeks – and finds – the positivesCulture
TechnologyA cheap pollution sensor will keep you off the dirtiest roads This wearable device reveals exposure to the three worst pollutants, linking it with online maps to help you avoid poor air, a bit like a Fitbit for pollution News