Safety on tap
From LED lamps to awareness courses, a slew of measures seeks to make drinking water safe.
Let there be water
The world faces a water crisis. But researchers are tapping advanced science to avert it.
From red mud to green steel
A toxic residue of aluminium production is turning into an eco-friendly source of iron for making steel.
Awake to a problem
Scientists have developed a blood test to flag sleep deprivation.
