NOVA Minute: Sam Bowring
b'In this "NOVA Minute", geologist Sam Bowring from MIT offers his thoughts on mass extinctions.\\n\\nProduced by David Levin. Original interview by Julia Cort. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers.\\n\\nLearn more at pbs.org/nova/sciencenow'