New framework embraces uncertainty to make sense of history

There are many things we don't know about how history unfolds. The process might be impersonal, even inevitable, as some social scientists have suggested; human societies might be doomed to decline. Or, individual actions ...

NASA Armstrong updates 1960s concept to study giant planets

NASA researchers are looking at the possibility of using a wingless, unpowered aircraft design from the 1960s to gather atmospheric data on other planets—doing the same work as small satellites but potentially better and ...

page 4 from 40