Scientists now have a census of the cells in the human brain — a key step in creating a detailed map of the organ where our thoughts, movements and emotions originate.
Why it matters: Scientists say this parts list — combined with information still to be gleaned about the circuits they form — will help provide much-needed insights into diseases and disorders that affectthe brain.
Taking a glimpse at Saturday's solar eclipse — even a quick one — can cause damage if you don't wear the right protective eyewear.
Why it matters:NASA warns that "there is no time when it is safe to look directly at the Sun" without protection such as eclipse glasses and special-purpose solar filters.
