Amazing footage by BBC Nature, I had to share:
Last edited by a moderator:
We have "Planet Earth" queued up for the holiday so we can revisit this classic over a period of days and avoid the tripe that the networks are selling as "classics".I love David Attenborough's voice!!! I bought the BBC version of Planet Earth just because he narrated it - not the US Susan Sarandon version.
Can someone explain the physics involved here? I can understand seawater being liquid at say -3 C, and fresh water would freeze at this temperature, although not as fast as it appears to here. Why would fresh water sink in seawater? Fresh water has a maximum density at +4 C and becomes less dense at lower temperatures. That's why ice forms on the surface and floats.whoa...