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By Malcolm Ritter The Associated Press

Scientists: Ash tree species pushed to brink of extinction

NEW YORK — Five prominent species of ash tree in the eastern U.S. have been driven to the brink of extinction from years of lethal attack by a beetle, a scientific group says.

Tens of millions of trees in the U.S. and Canada have already succumbed, and the toll may eventually reach more than 8 billion, the International Union for Conservation of Nature said Thursday.

DNA test results may not change health habits

NEW YORK — If you learned your DNA made you more susceptible to getting a disease, wouldn’t you work to stay healthy?

You’d quit smoking, eat better, ramp up your exercise, or do whatever else it took to improve your odds of avoiding maladies like obesity, diabetes, heart disease or cancer, right?

The scientific evidence says: Don’t bet on it.

Brain changes seen in pregnancy, may help preparing for baby

NEW YORK — Pregnancy affects not only a woman’s body: It changes parts of her brain too, a new study says.

When researchers compared brain scans of women before and after pregnancy, they spotted some differences in 11 locations. They also found hints that the alterations help women prepare for motherhood.

Baby born with DNA from 3 people, first from new technique

NEW YORK — Scientists say the first baby has been born from a controversial new technique that combines DNA from three people the mother, the father and an egg donor.

The goal was to prevent the child from inheriting a fatal genetic disease from his mother, who had previously lost two children to the illness.

Baby born with DNA from 3 people, first from new technique

NEW YORK — Scientists say the first baby has been born from a controversial new technique that combines DNA from three people the mother, the father and an egg donor.

The goal was to prevent the child from inheriting a fatal genetic disease from his mother, who had previously lost two children to the illness.