ID3 vTOPE NPRTCOM TALB Day to DayTIT2 ' Congress Holds Global Warming HearingsTCOP 2007TRCK 7TCON Politics & SocietyCOMM nprComment Global warming is the topic of hearings in both houses of Congress Wednesday. Rep. John Dingell (D-MI), chairman of the House Energy and Commerce Committee, a former skeptic of the global warming trend, describes his stance now.TPE1 NPRTYER 2007 P , #5mmll y!tX ~0.!ёMd tBICw4ӸogNJvG$l z3$D@5 e9ǛPHH&R&Ru5z3^KH=` %屠BB(#9Eq@ m s;IP: l!$ʼn<da2p_Sް>iE_j<5'3[LP=:>?) M}m \NdpTQf 2fO|:B"%㙬I#cD*D7ZN3f\hx} R