Why is the eastern monarch butterfly disappearing?

Michigan State University ecologists led an international research partnership of professional and volunteer scientists to reveal new insights into what's driving the already-dwindling population of eastern monarch butterflies ...

Older women more likely to conceive twins due to evolution

Women are more likely to conceive fraternal twins once they reach their 30s as a result of an evolutionary response to combat declining embryo viability, according to a new international collaboration involving researchers ...

Society warns cuckoo bird in danger of extinction

(AP) -- Britain's cuckoo bird, known for its distinctive call, is in danger of extinction along with 51 other species, the Royal Society for the Protection of Birds said in a new report Thursday.

Controversial monkey study reignites animal testing debate

Mother monkeys permanently separated from their newborns sometimes find comfort in plush toys: this recent finding from Harvard experiments has set off intense controversy among scientists and reignited the ethical debate ...

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