No DIY enthusiast wants to be greeted by a tub of old, seemingly unusable paint, but what if you could restore it? Let's see if the sieve hack actually works.

SAITAMA--A previously unknown oil painting of a black cow presumed to be by artist Leonard Tsuguharu Foujita (1886-1968) has just turned up, courtesy of a collector. The work, titled “Sunshu ...