Could a ball made of bamboo and biodegradable plastic detonate deadly landmines? Afghan designer Massoud Hassani says his device can do just that, despite the scepticism of some experts.
Deadline: Jan 12 2014
Reward: $10,000 USD
Deadline: Jan 27 2014
Reward: $15,000 USD
The Dow Chemical Company is the leading producer of polyalkylene glycols (PAGs) used in synthetic fluids and lubricants where petroleum,
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