Researchers at Stanford University have transformed human embryonic stem cells into germ cells that they believe are so perfect that they could be grown into fully-functioning sperm and eggs.
Carbon nanotubes - which are being considered for use in everything from sports equipment to medical applications - could cause lung cancer if inhaled, according to a study.
In an attempt to persuade students that science, technology, engineering and math (STEM) aren't actually that dull, six Massachusetts institutions have launched a mentoring program.
YouTube viewers worldwide have the unique opportunity to ask a Nobel laureate a question on the official Nobel Prize channel. NASA's John Mather, recipient of the 2006 Nobel Prize in Physics for measuring the echoes of the Big Bang, will be the first to answer a selection of video questions submitted via YouTube. The deadline for questions is 30 October.