Nature

Carl Sagan, in his Cosmos television series about the universe said, “We are star-stuff.

Scientists are undecided. Some say the universe is open-ended, that it will expand forever, and that entropy will ultimately win.

In a friend’s blog and in response to an on-going exchange about living in the USA versus elsewhere (see the replies to his [Thursday, Nov.

Guidelines from above: Master what you can. Help each other. Try not to hurt anyone.