Related topics: birds

Managing meandering waterways in a changing world

Just as water moves through a river, rivers themselves move across the landscape. They carve valleys and canyons, create floodplains and deltas, and transport sediment from the uplands to the ocean.

First discovery in decades of blue whales near Seychelles

Blue whales are fascinating animals. At 24–30 meters in length (longer than a basketball court) they are the largest creatures on Earth. They are also among the rarest. Estimates suggest that there are only about 5,000 ...

Migration

migration refers to directed, regular, or systematic movement of a group of objects, organisms, or people, including:

In ecology and anthropology:

In science:

In computing:

In arts and entertainment:

Other uses:

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