LUHANSK, UKRAINE - MARCH 16, 2015: Pavel Pavlov, left, holds lightbulbs over a microwave-emitting device dubbed the Magnetron as Aleksandr Kryukov, right, films in the yard of the house where Kryukov lives with his grandmother in Luhansk, Ukraine. The two have created a series of popular YouTube videos involving scientific experiements. CREDIT: Brendan Hoffman for The New York Times