Climate Central's Senior Science Writer Andrew Freedman explains weather whiplash and what is has to do the the Polar Vortex.
Senior science writer Andrew Freedman talks to Judy Woodruff of PBS NewsHour about the science behind the polar vortex.
Climate Central's chief climatologist Heidi Cullen testified before the Senate committee on Environment and Public Works on the facts and impacts of climate change.
This NOAA animation shows the locations of each of the 7,793 daytime and 7,493 nighttime records (or tied records) in sequence over the 31 days in March.
As Dr. Heidi Cullen reports, the suffocating heat comes on the heels of the government's release of the new climate "normals". Every 10 years, scientists from the National Oceanic and Atmospheric Administration calculate the 30-year averages for temperature and precipitation from thousands of U.S. locations.
This year's Atlantic hurricane season is expected to be busier than usual and the 2011 summer forecast calls for some extreme weather. Heidi Cullen makes the climate connection.
With what feels like an especially long winter coming to an end, Dr. Heidi Cullen gives a climate outlook for spring 2011.
What weÃ¢Â€Â™ve known as Ã¢Â€ÂœnormalsÃ¢Â€Â for our climate during the past decade will very likely change soon.