The two suspects in last Friday's killings in Tulsa of three African-Americans and wounding of two others were formally charged today with "three counts each of first-degree murder, two counts of shooting with intent to kill and five counts of malicious intimidation or harassment," the Tulsa World repo
How do astronauts take a bath in space? What happens to their sense of smell in a weightless environment? Two NASA astronauts aboard the International Space Station discuss the challenges of life in low Earth orbit and how their research is a stepping stone for future space exploration.
In a new book, To Forgive Design: Understanding Failure, engineer Henry Petroski chronicles disasters from the sinking of the Titanic to the destruction of space shuttles Challenger and Columbia. Petroski discusses why these accidents are often caused by factors other than a design flaw.