My apologies to the techies who thought this was about the web. No sorry, this is about real science. The paper talks about neutron fluxes from electrical discharges in clouds. I mentioned last week about warm matter. Well in the lightning it seems the plasma is hot enough to produce neutrons.

Strong Flux of Low-Energy Neutrons Produced by Thunderstorms discharges [Phys. Rev. Lett. 108, 125001]http://prl.aps.org/abstract/PRL/v108/i12/e125001