With no end in sight to invasion of Ukraine, effect of sanctions ripples through world of Jewish philanthropy

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