By Watcharapol_Kun / Getty Images Outdoing both spirulina and kale, duckweed was a hit at the last SIAL food fair in Paris. In fact it’s been spotted and identified as a new “superfood” that could not only be a contender as a plant-based alternative but could also help reduce the consequences of human food on global warming. Outdoing both spirulina and kale, duckweed was a hit at the last SIAL food fair in Paris. In fact it’s been spotted and identified as a new “superfood” that could not only be a contender as a plant-based alternative but could also help reduce the consequences of human food…