Their dams cause floods, and that gets them in trouble with humans. But in the right place, more water can be a big help.

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Take a break from online holiday shopping this weekend to enjoy the full moon and a penumbral lunar eclipse. Both events will be visible early Monday morning. Lunar eclipses can only occur during a ...

Better catch this week's supermoon. It will be a while until the next one. This is year’s fourth and final supermoon, and came within about 225,000 miles (361,867 kilometers) of Earth on Thursday. It ...

Better catch this week's supermoon. It will be a while until the next one. November's supermoon made its closest approach on Thursday with the full lunar phase Friday. It rises after the peak of the ...

The Beaver supermoon is reaching its peak this weekend, converging with other events like a meteor shower and a major lunar standstill — though you may need binoculars or a telescope to see some of ...