'Most dam failures in India happen with small dams'
An expert speaks on the mechanics and challenges of building and maintaining dams for maximal safety.
Protein shake-up
Alternative proteins are at the top table, fed by dietary, ecological and ethical concerns.
No smoke without fire
Stubble-burning farmers are slyly evading satellite detection. Researchers, therefore, favour multisourcing pollution data.
For a sea change
Minerals from the ocean bed are luring explorers to its depths. But the red flags advise caution.
