This scanning electron micrograph shows a fossil Antarctic radiolarian shell. These one-celled plants at the bottom of the marine food chain are nearly invisible to the naked eye. It took about a year for Hawaii researchers to clone 50 mice.
Some researchers say the similarities are too close to ignore.
Recent research sheds new light on the body's timing mechanisms. Look beyond free will, says Thomas W. Clark. A Science Watch reprint. Employers are seeking scientists with skills in more than one discipline. Promega's Dual-Luciferase TM Reporter Assay System.