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Residents, tourists and climbers are being told to stay far away from Mount Agung, a large volcano in Bali where hundreds of shallow volcanic earthquakes have been recorded in recent days. The volcano's last eruption, in 1963, killed more than 1,000 people.

The Indonesian Center for Volcanology and Geological Hazard Mitigation raised the alarm on Friday.

When Hurricane Maria raked Puerto Rico last week as a Category 4 storm, it cut off electricity and communications island-wide, including at the Arecibo Observatory, one of the world's largest radio telescopes.

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ROBERT SIEGEL, HOST:

Curiosity is a familiar feeling among people.

But as soon as we scrutinize that feeling, curiosity reveals itself to be a complex emotion indeed. Just ask yourself: Is curiosity a positive feeling or a negative feeling? Is it more like frustration or more like anticipation? Is it a painful reminder of what we don't (yet) know, or a thrilling beacon towards what we might soon discover?

Flu symptoms can be more severe when you're pregnant, landing women in the hospital, threatening their lives and even leading to preterm birth or miscarriage. The virus is a risk to the woman and the baby.

So, it's particularly important that people who are pregnant get the flu vaccine. And it's also important that the effects of those vaccines be studied in pregnant women.

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