A lot of times they don't want to hear it. But you know, if some good is done to you, you should pass it on.
I was born in 1950 and watched science fiction and horror movies on TV and was always really fascinated by them.
Ice shelves in general have episodic carvings and there can be large icebergs breaking off - I'm talking 100km or 200km long - every 10 or 20 or 50 years.

