By CHOE SANG-HUN South Korea’s professional baseball league scrapped all 10 games scheduled for Wednesday and Thursday as a record-breaking heat wave gripped the nation, overwhelming both players and fans and forcing authorities to warn citizens off the streets and farm fields. The brutal heat set a record Sunday, when a southwestern town clocked a staggering 42.5 degrees Celsius (about 108.5 degrees Fahrenheit) — the highest reading in 122 years of weather observations in South Korea….
