Nature and EnvironmentFriend or foe?To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and EnvironmentSian Griffiths10/13/2016October 13, 2016Experts at Ottawa's Central Experimental Farm are working hard to find ways to adapt farming methods to ensure future food production. And they've called on these scary-looking wasps for a helping hand.https://p.dw.com/p/2RBfOAdvertisement