Funny, she doesn't LOOK completely insane: Warmist climate scientist Emily Shuckburgh suggests that by 2100, trace amounts of CO2 could cause a "50% reduction in the suitability of crops"

Future climate change: perspectives from the Polar regions and impacts to global policy - YouTube

Dr Emily Shuckburgh spoke at the 3rd Annual Meeting of the Centre for Risk Studies in December 2011 on the subject of future-proof decisions and recommendations.