I discovered Captain Science in a Caliber Press reprint called Buried Treasure. They created a fine black-and-white reprint of “Captain Science and the Insidious Dr. Khartoum!” Love the Wally Wood artwork!
Like many Golden Age Comics now in the public domain, you can find Captain Science scans at the Digital Comic Museum. Or, you can collect the original issues of Captain Science.
Mars Will Send No More 