India defense scientists are designing "non-lethal" hand grenades laced with hot chili powder. From the BBC:
Researchers say the idea is to replace explosives in small hand grenades with a certain variety of red chilli to immobilise people without killing them.India plans hot chilli grenades (Thanks, Carlo Longino!)
The chilli, known as Bhut Jolokia, is said to be 1,000 times hotter than commonly used kitchen chilli.
Scientists at India's Defence Research and Development Organisation (DRDO) are quoted as saying the potent chilli will be used as a food additive for troops operating in cold conditions.