As one who believes that human-caused global warming is a threat to the survival of much of life on Earth, and that urgent action is required to counter it, I want to go on record that the current warm spell on the East Coast of the US is no more evidence for global warming than the snowball which Senator James Inhofe threw on the floor of the Senate last winter is evidence against it.
Local weather is not the same as global climate. And the long-term trends of global climate are clear– as the astrophysicist Neil deGrasse Tyson illustrates: