Sentences with phrase «longest mass migration»

The Gray Whale makes the most spectacular and longest mass migration of any marine mammal.

Not exact matches

Evoked by a new analysis of a fossil tooth of the long - extinct animal, called Diprotodon, the scenario would be the only known seasonal mass migration among marsupials and their close kin.

It has long been debated whether that change in subsistence strategy involved the mass migration of people from the Near East bringing innovative technologies and domestic animals to Europe or whether it was due to a transmission of cultural practices passed on from neighbouring populations.

According to a new analysis of a fossil tooth of the long - extinct animal, called Diprotodon, the scenario would be the only known seasonal mass migration among marsupials and their close kin.

Back in 2002, when I wrote about «The Megalopolis as Eco-Strategy» (part of a special Science Times section), a lot of scientists told me that the mass migration of humans from rural areas to cities would have environmental benefits in the long run.

While the country's brutal civil war is often presented as the cause of this mass migration, a study published last year in the Proceedings of the National Academy of Sciences suggests that it may be rooted in an earlier environmental crisis, one linked to land degradation and long - term drought in the Fertile Crescent.

Desertification could bring about mass migration as people are forced to leave lands that can no longer support them, posing an «imminent threat to international stability», according to the report's authors.»