Man-made climate change is adversely affecting the U.S. , says a federal report . Report : Changes will stress water resources , challenge crops and raise sea levels . Score: 6 Report 's predictions : Hotter heat waves , more flooding and an increase in wildfires .
Man-made climate change is adversely affecting the U.S. , says a federal report . Report : Changes will stress water resources , challenge crops and raise sea levels . Document is released by White House science adviser and mandated by Congress . Report 's predictions : Hotter heat waves , more flooding and an increase in wildfires .