Word: ageing
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Dates: during 1990-1999
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While the age of the donor is probably partly responsible, the research team--which included Ian Wilmut, Dolly's creator--may have discovered another factor. The more time a clone embryo spent in a test tube before transfer to a womb, the shorter the clone's telomeres. "In culture, cells go through 20 divisions," says research director Alan Colman. "That's a significant percentage of the 150 they go through in a lifetime...
WANT TO BREAK 100? Everyone wants to live to a ripe old age--but not too old, it turns out. A new poll by the AARP finds that 63% of Americans over age 18 are concerned about the effects of age and don't want to live to be 100 or older. The average person among those polled wants to live to 91. Despite their concerns, 60% believe life will be better for seniors in the 21st century, and 57% think life expectancy will then...
FEARS ABOUT LIVING TO A VERY OLD AGE...
...billion Estimated age of the universe as revealed last week by the Hubble space telescope, in years...
...billion Previous high-end estimate for the universe's age, in years...