Agriculture

Where does the plastic in our oceans come from?
Chinese robot clones pigs with no human help
New harvesting robots are gentle enough to pick this fruit 
MIT grads demonstrate first ammonia-powered tractor
Scientists grow plants in real lunar soil for the first time 
An ancient enzyme could supercharge photosynthesis
Smart sensor tells you exactly when fruit will ripen — or spoil 
Silencing one gene with CRISPR boosts crop yields by 10%
One breed of honey bee can survive its deadliest threat
The West Coast wants to tap into the maple sugar market