No letup yet for flood-battered southern Brazil

The rains may have abated, but floodwaters continued their assault on southern Brazil Monday, with hundreds of municipalities in ruins amid fears that food and drinking water may soon run out.

Turbid waters keep the coast healthy, finds study

To preserve the important intertidal areas and salt marshes off our coasts for the future, we need more turbid water. That is one of the striking conclusions from a new study conducted by a Dutch-Chinese team of researchers ...

What's with the recent wild tornadoes? Expert weighs in

In the past week, weather authorities across the U.S. reported more than 100 tornadoes across the central and southern parts of the country, destroying dozens of homes and buildings from Oklahoma to Nebraska and Iowa.

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