The rot produces methane, which is collected via a network of pipes that penetrate the mountain, and burned to produce electricity.

ECONOMIST: A history of waste

In a talk at the Black Hat security conference in Barcelona Thursday, Greek researcher Thanassis Giannetsos plans to present a new software tool that he and two colleagues have written that they say would allow a malicious hacker to penetrate a sensor network and change or delete data at will.

FORBES: Researcher Throws A Wrench In IBM And HP's Sensor Networks

This technique tries to trick people into revealing useful information that attackers can capitalise on to penetrate deeper into a network.

BBC: State-backed data spies hunt industrial secrets

Yet another organ model under the Physiome Project's umbrella is the micro-vasculature the vast network of tiny blood vessels that penetrate deep into almost all the nooks and crannies of the body.

ECONOMIST: REPORTS: The heart of the matter | The

America is clearly struggling to penetrate the guerrillas' shadowy, diffuse network.

ECONOMIST: Baghdad, city of bombs | The

The malware can steal data and social-network conversations, take snapshots of computer screens, penetrate across networks, turn on a computer's microphone to record audio and scan for Bluetooth-active devices.

WSJ: Cyberattack Hits Iranian PCs

The cheapest way to increase capacity is to add more spectrum or to move a network to a lower frequency, which allows radio waves to penetrate walls more easily.

ECONOMIST: Saturated mobile networks