• Two men in Hawaii " think a giant particle accelerator that will begin smashing protons together outside Geneva this summer might produce a black hole or something else that will spell the end of the Earth — and maybe the universe. Scientists say that is very unlikely — though they have done some checking just to make sure." Uh, how sure?

• African Americans make up nearly one-fifth of all U.S. diabetes patients, and the number is growing.

• Vytorin, one of the most popular cholesterol drugs, "doesn't prevent heart disease." Sounds promising.

• Blacks with a family history of colon cancer are less likely to get colonoscopies than their white counterparts.

• Twelve tips to live longer.