On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star, dubbed M31-V1, was key to showing that the universe extended far beyond ...

Engineers are turning to animal origami, from insects that tuck away wings to a protist with an accordion-like neck, for design help ...

The Post welcomes letters up to 250 words on topics of general interest. Letters must include full name, home address, day and evening phone numbers, and may be edited for length, grammar and accuracy ...

As long as there have been poets, they have been writing war elegies. In this episode, Mark and Seamus discuss responses to the American Civil War (Walt Whitman), both world wars (W.B. Yeats, Wilfred ...