Stephen Hawking warned of danger of contacting aliens with superior tech, saying they could destroy humanity; others say advanced civilization would already know of our existence
$10 million donation over 10 years at Pennsylvania business school comes from alumnus Yuri Milner, a tech investor who has also funded research into extraterrestrial life
Project funded by foundation belonging to Russian-Israeli billionaire Yuri Milner; protective gear to be distributed by Magen David Adom to those working in essential jobs
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