Sarah Palin took issue with President Obama's use of melting glaciers as an example of the impact man-made climate change has had on the environment. The science on glaciers and climate change, however, is strongly in the president's favor.

Glacial trends are indicative of climate change.

But simply pointing this out can invite controversy.
During his trip to Alaska, President Obama took note of a receding glacier in an attempt to highlight the impact climate change is having on the environment.
Sarah Palin, the former governor of Alaska, took issue with Obama's example. 
Asked whether she takes climate change seriously during a CNN interview, Palin