“There may be no ethical challenge more immense than that wrought by our changing, and in some places now unlivable, climate. Migration due to environmental degradation or extreme weather events is ...

The reason behind it could be climate, availability of food ... Take a look at 16 spectacular pictures of animal migration that prove it is among the most fascinating of natural phenomena.

Opinions expressed by Forbes Contributors are their own. I write about how migration affects European society and economies. Climate change could displace more than 200 million people internally ...

To test that hypothesis, the researchers planted the seedlings in logged forests ranging from completely clearcut areas to ...