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Why are so many Italians against vaccines?
Italy’s populist coalition has been criticized in recent days for rowing back on a law that made 10 vaccines compulsory for children.
How some species are 'wired' for talk
Our primate cousins have surprised and impressed scientists in recent years, with revelations about monkeys' tool-using abilities and chimps' development of complex sign language.
Are trees vegetarian?
Humans can be vegetarians, choosing to forgo meat, but what about trees? After all, trees need only soil, sunlight and water to survive, right?
Are big-city transportation systems too complex for human minds?
Many of us know the feeling of standing in front of a subway map in a strange city, baffled by the multi-colored web staring back at us and seemingly unable to plot a route from point A to point B.
Are rich countries selling the developing world short on climate change?
Rich countries say they are on track to beating the $100 billon climate fund target, but poorer countries criticize the unfair burden of loans and a stark lack of money for adaptation.

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