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Two species of fern that diverged 60 million years ago are as evolutionarily distant as, say, elephants and manatees. Nonetheless, the two species recently produced a hybrid, say astounded botanists.

As grocery prices continue to rise, many college students are turning to their campus food pantry to help make ends meet.

The Shanghai exchange is on a tear, but there could be trouble ahead for ill-informed investors. Analysts say the current upswing is driven by perceptions rather than fundamentals.

President Nicolas Maduro's government hasn't solved food shortages or ended high inflation. It's been more effective in cracking down on the opposition, filing legal charges against many mayors.

The jury in the Boston Marathon bombing case has handed down its verdicts against Dzhokhar Tsarnaev. Jurors found Tsarnaev guilty on all 30 counts, 17 of which can carry the death penalty.

Researchers say they can replace DNA in human eggs with genetic material from another woman to prevent devastating disorders in children. But big questions remain on safety and ethics.

The estate tax is yet another piece of the fiscal cliff that needs to be worked out. Those who want to the raise what they call the "Paris Hilton tax" say it applies only to the very rich, who can afford to pay. Opponents of the increase, however, brand it the "death tax" and say it hurts farmers and small-business owners.

There's been lots of debate about whether tiny amounts of the chemical have the potential to cause health problems. A new FDA study supports a previous conclusion that the chemical is safe for people.

The U.S. has wanted better relations with Venezuela, but the new president — like Hugo Chavez before him, say experts — uses the U.S. as a scapegoat to divert attention from domestic problems.

Assisted living-type facilities often are subject to less scrutiny than nursing homes. Investigations in Vermont and elsewhere have revealed patterns of poor care and deaths.