A scientist at Princeton University and his colleagues are looking into the biofuel potential of duckweed, according to a report in the journal Industrial and Engineering Chemistry Research. The fast-growing aquatic plant can grow in wastewater, isn't used for human consumption and can be collected more easily than algae, the researchers said. A small-scale duckweed facility could yield a cost-competitive fuel if the price of crude oil is $100 per barrel, while a bigger biorefinery could achieve competitiveness at $72-per-barrel crude oil, the researchers stated.