Once again the entire basis of the ice caps melting is based on data starting in 1979.
WOW! Lets measure climate during a warming phase and claim we are all doomed.
An astounding example off wrong-way-round thinking.
The bulk of the data indicating the ice caps are melting begins in 1979 due to simple availability. There are other data going A-L-L-L the way back to 1970 or 1972. It indicates the same thing. PERHAPS as large as what we saw in the early 21st century.
The ice is melting because global temperatures have been rising since 1880.
We are in a "warming phase" due to having released gigatonnes of GHGs into the atmosphere. Several natural cycles exist, but this is not one of them. This warming is taking place much faster than any natural warming cycle and thus life, including humans, will have insufficient time to adapt. Particularly if we keep listening to idiots like the ones you buy in to.