Now for some shocking news about plants: Scientists in Arizona report that exposing plants to low doses of electricity can boost levels of useful plant chemicals. Their finding could lead to cheaper and faster ways to produce useful plant-based materials such as medicines and pesticides.

Intro theme and various sound effects by Adam Dylewski; music by Kevin MacLeod (incompetech.com); Creative Commons licensed audio from freesound.iua.upf.edu includes electricity sounds by Halleck, apple crunch by Koops, farm sounds by acclivity, buzzing fly by galeku, laser sound by inferno and applause by SandyRB.