Heat, War And Export Bans: Global Food Threats Are On The Rise

Extreme heat that's engulfing huge swaths of Asia, Europe and North America is just the latest challenge in what's been a rough year for farmers.

As scorching temperatures ravage farms from the US to China, crop harvests, fruit production and dairy output are all coming under pressure. That extreme weather is just one of threats to food supplies that are once again mounting around the world.

This week, top rice exporter India banned some shipments of the commodity - a staple for about half of the world's population - to keep domestic prices in check. Russia quit a deal that allowed Ukrainian grain to flow safely across the Black Sea. 

On top of that is the recent arrival of the El Niño weather pattern that may cause further damage to agriculture.