Stephen Hawking Hospitalized

From WebMD,

April 20, 2009 -- Physicist Stephen Hawking, the author of books including A Brief History of Time, is said to be seriously ill and hospitalized in Cambridge, England.

Hawking, who is 67 years old and has ALS ( amyotrophic lateral sclerosis), is "very ill" with a chest infection that he's had for several weeks and is undergoing tests at Addenbrooke's Hospital, according to a Cambridge University spokesperson quoted in media reports.

This sounds serious.