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Hawking, whose original medical diagnosis more than half a century ago gave him two years to live, continues to work and and lecture internationally. Richard Branson has offered him a free place on his Virgin Galactic spacecraft , and his website says “he still hopes to make it into space one day”.
Persistence | Previous waves of immigrants eventually subsided, the proportions coming from individual countries fluctuated greatly, and, after 1924, immigration was reduced to a trickle. In contrast, the current wave shows no sign of ebbing and the conditions creating the large Mexican component of that wave are likely to endure, absent a major war or recession. In the long term, Mexican immigration could decline when the economic well-being of Mexico approximates that of the United States. As of 2002, however, . gross domestic product per capita was about four times that of Mexico (in purchasing power parity terms). If that difference were cut in half, the economic incentives for migration might also drop substantially. To reach that ratio in any meaningful future, however, would require extremely rapid economic growth in Mexico, at a rate greatly exceeding that of the United States. Yet, even such dramatic economic development would not necessarily reduce the impulse to emigrate. During the 19th century, when Europe was rapidly industrializing and per capita incomes were rising, 50 million Europeans emigrated to the Americas, Asia, and Africa.