“It is the history of the universe, and our place within it, that I want to sketch briefly.” - Owen Gingerich It took billions of years to make the earth habitable for humans. A distinguished astronomer warns the United Nations how quickly that can be reversed. Check out Our Imperiled World by Owen Gingerich from the Winter 2013 issue of The American Scholar. 
Pop-upView Separately

“It is the history of the universe, and our place within it, that I want to sketch briefly.” - Owen Gingerich

It took billions of years to make the earth habitable for humans. A distinguished astronomer warns the United Nations how quickly that can be reversed.

Check out Our Imperiled World by Owen Gingerich from the Winter 2013 issue of The American Scholar. 

Stars have lifespans, and our star is half over. Five billion of our sun’s allotted 10 billion years have passed. We have five billion to go. But long before that, we’ll be toast. In a debated one-to-four-billion years the sun will expand and lap the shores of Earth. Tetélestai. Priscilla Long describes fusion, the Sun, and the possibility of life elsewhere in the Universe. Read. (Photo via Boston. TRACE Project, Stanford-Lockheed Institute for Space Research, NASA)
Pop-upView Separately

Stars have lifespans, and our star is half over. Five billion of our sun’s allotted 10 billion years have passed. We have five billion to go. But long before that, we’ll be toast. In a debated one-to-four-billion years the sun will expand and lap the shores of Earth. Tetélestai.

Priscilla Long describes fusion, the Sun, and the possibility of life elsewhere in the Universe. Read.

(Photo via Boston. TRACE Project, Stanford-Lockheed Institute for Space Research, NASA)