Starting Monday, travelers from the United Kingdom, Germany, Japan, Australia, and a host of other countries will have to register online with the U.S. Department of Homeland Security before they can travel into the United States.

As part of its efforts to use technology to improve border security, the DHS is mandating that travelers from any of the 35 countries in the U.S. Visa Waiver Program apply online for an Electronic System of Travel Authorization before boarding a plane to the U.S. Previously, visitors from those countries were only required to fill out the I-94W form on flights to the U.S. for trips shorter than 90 days.

IBM Research on Monday announced that it has built a new nanoscale microscope (link to YouTube video) capable of creating images with 100 million times finer resolution than existing MRI technology.

The project was made possible through a process called magnetic resonance force microscopy, which, according to IBM, detects “ultra-small magnetic forces.” The technique is said to be able to “see” beneath surfaces and be safe for sensitive biological materials.

IBM said that it ran a test using the new system that established for the first time, magnetic resonance imaging on nanometer-scale items. By running it on a tobacco mosaic virus that is 18 nanometers across–18 billionths of a meter–the new system achieved resolution down to four nanometers.