Intense crises of crustal stress appear to cross large regions, and to precede by several months the eventual occurrence of some strong earthquake within them. The phenomenon is not linear, and the stress control reflects some wide scale-size rather than local effects. The stress propagation through the crust can be effectively monitored by means of acoustic emission (AE) techniques (ultrasound...

In A Tale of Two Viruses, Neeraja Sankaran traces the parallel histories two groups viruses: bacteriophages, which infect bacteria, and sarcoma agents, cause cancer. Research into these distinct proved to radically reshape what scientists thought they knew, lay foundations for our current understanding viruses.