• Canada launches its first emissions-trading market.
• Hybrid drivers worry about replacing the battery.
• Nano-towel can soak up oil spills.
• World Bank stepping up efforts to address food crisis.
• Is water becoming the new oil?
• Canada launches its first emissions-trading market.
• Hybrid drivers worry about replacing the battery.
• Nano-towel can soak up oil spills.
• World Bank stepping up efforts to address food crisis.
• Is water becoming the new oil?