This article first appeared in Radio Times magazine.My son Breck Bednar was bright and happy-go-lucky. He loved science and technology and figuring out the way things work. He had the most inquisitive mind, taking apart old radios and putting them back together again. He was my right-hand man. Breck would change lightbulbs, build flat-pack furniture and remove spiders from the house for me – and he was a cool big brother to his siblings, my trip…