LONDON, England (Reuters) -- A masked and caped do-gooder has been sweeping through an English town, performing good deeds and scattering terrified bad guys, a local newspaper reported on Friday.

The Kent and Sussex Courier said it had received letters from "stunned residents" of the town of Tunbridge Wells, southeast of London, who saw the man in a brown mask and cape scare off hooligans and return a woman's dropped purse.

"To my great surprise," the paper quoted 21-year-old psychology student Ellen Neville as saying, "a masked man wearing a brown cape rushed past me to assist a woman who was having a bother with a group of youths.

"He swept in, broke up the commotion and ran off, leaving myself and the woman in a state of shock," she said.

A man wrote to say he was being chased by some youths when the hero appeared and "shocked the gang so much they ran off."

Another woman wrote to say the crusader had tapped her on her shoulder to return her purse.

"If only there were more people around with this kind-hearted spirit," she said.

An experiment is under way in Paris that aims to turn the city into one huge Wi-Fi hot spot, making it what could be the first large wireless city in the world.

A dozen Wi-Fi antennas have been set up outside subway stations along a major north-south bus route, providing Internet access to anyone near them who has a laptop computer or personal desk assistant equipped to receive the signals.

The access is free until June 30 but will require paid subscriptions afterward.

If all goes as planned, the private partners building the system expect to make a decision before the end of the year to install at least two antennas, and possibly three, outside each of Paris's 372 Metro stations and to link them through an existing fiber optics network in the subway tunnels.

Pardon me, says a reporter, shivering in the frigid dawn, but that sounds too good to be true.

"Everybody says that," says Appel. He is a tall, affable entrepreneur who has assembled a team of scientists, former government leaders, and deep-pocketed investors to develop and sell what he calls the thermal depolymerization process, or TDP. The process is designed to handle almost any waste product imaginable, including turkey offal, tires, plastic bottles, harbor-dredged muck, old computers, municipal garbage, cornstalks, paper-pulp effluent, infectious medical waste, oil-refinery residues, even biological weapons such as anthrax spores. According to Appel, waste goes in one end and comes out the other as three products, all valuable and environmentally benign: high-quality oil, clean-burning gas, and purified minerals that can be used as fuels, fertilizers, or specialty chemicals for manufacturing.

Unlike other solid-to-liquid-fuel processes such as cornstarch into ethanol, this one will accept almost any carbon-based feedstock. If a 175-pound man fell into one end, he would come out the other end as 38 pounds of oil, 7 pounds of gas, and 7 pounds of minerals, as well as 123 pounds of sterilized water.