They returned to Berlin, where he chafed under Hitler's censorship and his wife, as a Jew, was increasingly endangered.
Sports salmon fishermen are relentless in their search for the perfect grounds, spending $10,000 and more for trips to Scandinavia and Britain, even as the world's prize salmon runs are increasingly endangered.
Orangutan are becoming increasingly endangered due to habitat destruction and the bushmeat trade, and young orangutans are captured to be sold as pets, usually entailing the killing of their mothers.
The best-preserved parts are the eastern and the southern walls, increasingly endangered because the wall's faults are enlarging.
It's important to protect species that are increasingly endangered from habitat destruction, overhunting, pollution, and climate change.
However, with sharks increasingly endangered, and large specimens of most species becoming rarer, scuba divers are prepared to pay a lot to see them.
But the conventional, affordable, enclosed sports car seems increasingly endangered.
While restoration techniques are constantly improving, the frescos are increasingly endangered by the heating systems installed in churches and by other activities such as concerts which now take place in the churches.
As parrots have become increasingly endangered, many countries have placed restrictions on the trade and/or prohibited the trade altogether.
Scholars at the new laboratory will be doing research into the ecology, habitat and biology of plants at a time when many species are increasingly endangered.