Icebergs are large masses of water in the form of ice. They are formed at the poles as the temperature at the poles is low throughout the year and this prevents the ice from melting.
The global rise in temperature due to an increase in the greenhouse gases in the atmosphere is the primary reason why icebergs are melting. A reduction in the release of greenhouse gases globally is the easiest way to save the icebergs. But this is a slow process and requires resources and technology that is presently not available for this cause. Other methods that have been suggested by scientists include the creation of a large reflective film that can be used to cover the polar ice caps and which would reflect all the infrared radiation falling on them.