It [ai] Would Take Off On Its

Time Travel May Be Possible, But It Is Not Practical.

Go The Extra Mile. It Makes Your Boss Look Like An Incompetent Slacker.

A Lot Of Prizes Have Been Awarded For Showing The Universe Is Not As Simple As We Might Have Thought.

There Are Grounds For Cautious Optimism That We May Now Be Near The End Ofthe Search For The Ultimate Laws Of Nature.

If It [the Universe] Was Expanding Fairly Slowly, The Force Of Gravity Would Cause It Eventually To Stop Expanding And Then To Start Contracting. However, If It Was Expanding At More Than A Certain Critical Rate, Gravity Would Never Be Strong Enough To Stop It, And The Universe Would Continue To Expand Forever.