Related topics: united states · barack obama · health · population

Darwin's finches have reached their limits on the Galapagos

The evolution of birds on the Galápagos Islands, the cradle of Darwin's theory of evolution, is a two-speed process. Most bird species are still diversifying, while the famous Darwin's finches have already reached an equilibrium, ...

How DACA affects the health of America's children

In recent years unauthorized immigrants known as "dreamers" have captured nationwide attention and become a force in American politics. Brought to the United States as children, these young adults came forward to ask for ...

How has American identity changed?

First-generation West African immigrants from Nigeria and Ghana transition smoothly into major societal institutions, such as the workplace and the neighborhood, but have not built stable, mutually beneficial friendships ...

Uncovering the roots of discrimination toward immigrants

All over the world, immigration has become a source of social and political conflict. But what are the roots of antipathy toward immigrants, and how might conflict between immigrant and native populations be dampened?

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Immigration

Immigration is the arrival of new individuals into a habitat or population. It is a biological concept and is important in population ecology, differentiated from emigration and migration.

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