An electron microscope photograph shows a micro-scale model of Vienna's St. Stephans cathedral created by a newly developed 3D printing technique. The base of the model is 100 micrometers (.004 inches) long. Researchers from the Vienna University of Technology have set a new world speed record for creating these tiny 3D objects. The University team create their grain of sand-size structures in just four minutes, a fraction of the time that other items have previously been printed.

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The process called 'two-photon lithography' involves using a focused laser beam to harden liquid resin in order to create micro objects of solid polymer. The scientists said the technique could be developed to make small biomedical parts to be used by doctors.

Starfighter 3000. Soldiers from the Uganda People's Defence Force (UPDF), one holding a piece of wood representing a weapon, engage in urban operations training in a mock urban setting nicknamed 'Little Mogadishu' at the Singo training facility in Kakola, Uganda, on April 30, 2012. The camp provides different training courses run by the U.S. Marines and also by instructors contracted by the U.S. State Department under the Africa Contingency Operations Training & Assistance (ACOTA) program, both aimed to better prepare Ugandan soldiers heading to Somalia as part of the African Union Mission in Somalia (AMISOM) peacekeeping operation.

Romhustler ps2 iso. Argentine aerospace engineer Pablo de Leon, a NASA team member, tests a space suit designed for possible use on Mars, at Argentina's Marambio base in Antarctica on March 13, 2011. The NDX-1 space suit, designed by De Leon, endured frigid temperatures and winds of more than 47 mph (75 kph) as researchers tried out techniques for collecting soil samples on Mars. The $100,000 prototype suit, created with NASA funds, is made out of more than 350 materials, including tough honeycomb Kevlar and carbon fibers to reduce its weight without losing resistance.