Radiation, which turns our cells against themselves, which recodes our very DNA. Radiation, which lives in our cell phones and microwaves and vegetables, which collects in glowing puddles of nuclear waste as the world settles into a crater-filled desert in the aftermath of the coming apocalypse.

FORBES: Measuring the Radiation Threat

We also explored several pressing environmental issues as record levels of radiation were found in fish near Japan's Fukushima nuclear power plant and we delved into the Gates of Hell -- a burning gas crater in Turkmenistan that has been ablaze for 41 years.

ENGADGET: Inhabitat's Week in Green: a locomotive that runs on hydrogen, honey detective and a 30 mph-capable hover bike