Do women catch colds more easily than men?

There is a common belief that women generally feel colder than men, but is this really backed up by science? In fact, the evidence is mixed, in part because few studies addressing this question have been conducted in a carefully controlled manner. That said, the data collected to date suggest that people’s perception and ability … Read more

Boeing races to catch SpaceX in orbit – but has it already lost?

Boeing’s days in space may be numbered. And SpaceX may have become NASA’s new favorite space contractor. The International Space Station (ISS) orbits the Earth at an altitude of 250 miles. That doesn’t sound like much. You can drive 250 miles in an inexpensive sedan in about four hours or take a one-hour flight (if … Read more