Anna Levi
Anna Levi answered

Tides are useful because they can be used as a source of renewable energy (a source of energy which will never run out). The energy of the waves can be harnessed to produce electricity, and no carbon dioxide emissions are produced.

Didge Doo
Didge Doo answered Anonymous' question

Just a couple of points to add to the excellent information already given.

As far as I know (and this is "knowledge" gleaned over the years rather than absolute fact) the aborigines have been in Australia for at least 40,000 years. I've never heard the 125,000 year claim but couldn't rule it out.

Originating in Africa … Read more

Virginia Lou
Virginia Lou answered Anonymous' question

Dear Corley and Rooster,

On that website you listed RC, was this proposed migration route for humans out of Africa and dispersing the whole world - especially interesting, I thought!

https://genographic.nationalgeographic.com/human-journey/

It speculates that Australian aborigines and Native Americans shared common ancestors, whereas another place Corley found suggests that Australians were direct ancestors for at least … Read more

Rooster Cogburn
Rooster Cogburn answered Anonymous' question

This is interesting. From Wiki :

Indigenous Australians are the Aboriginal and Torres Strait Islander people of Australia, descended from groups that existed in Australia and surrounding islands prior to European colonisation. The earliest definite human remains found in Australia are those of … Read more