Farewell Minitel, France’s forerunner to the web

This weekend, France will close Minitel, a service that has allowed people to access information on computers at home since long before the World Wide Web. The service was the most successful example of videotex, which uses dial-up modems to send information to and from a monitor or television screen. Minitel was launched in 1982 […]

What Keeps Nuclear Weapons from Proliferating [Science!]

Bill explains that the hardest step is making the proper type of uranium. Weapons and power plants require uranium that contains a greater amount of the isotope uranium-235 than found in natural uranium, which is mostly uranium-238. He outlines the key difficulty in separating the two isotope: They have nearly identical properties. He explains the […]