What This Summer's Natural Disasters Mean for Planet Earth  Bill
McKibben on the Signs of Global Warming  Tuesday, August 10,
2010  A boy makes his way along a flood affected pathway on
August 4, 2010 in Pabbi near to Nowshera, Pakistan. (Daniel
Berehulak/Getty)  The number of people affected by the massive
flooding in Pakistan over the past week is larger than the
combined total of the 2004 Indian Ocean tsunami, the 2005
Kashmir earthquake and the 2010 Haiti earthquake. Flash floods
have hit neighboring Kashmir, killing at least 85 people, and
China where more than 1,300 people are feared missing. In
Europe, a heat wave has led to the deaths of 5,000 people, and
in Russia drought and wildfires are ravaging the country.  Are
all these simultaneous natural disasters this summer just a big
coincidence, or is it a harbinger of something more serious for
Planet Earth? Environmentalist Bill McKibben connects the dots
and finds out how much it has to do with global warming.  Bill
McKibben, is author of "Eaarth: Mak