Italy's National Institute of Nuclear Physics said Friday that Antonio Ereditato had stepped down from the leadership of the OPERA experiment, whose measurements on the speed of neutrinos were widely questioned when they were announced in September.
Foot bones unearthed recently in Ethiopia belonged to a contemporary of 'Lucy,' the 3.2-million-year-old early human discovered in 1974. But these bones seem to belong to a different species, one thought to have split its time between walking upright and climbing trees.
Amazon CEO Jeff Bezos says that his deep-sea sonar expedition in the Atlantic has located the five engines used to launch Neil Armstrong, Buzz Aldrin, and Michael Collins to the moon in 1969, and he plans to bring at least one of them to the surface.
A team of European astronomers say that about 40 percent of red dwarf stars - the most common type of star in the Milky Way - have at least one planet whose temperatures would allow liquid water on the surface.