Sit, stay, roll over, come, fetch, and no. All common commands that responsible dog owners use to train and communicate with their pets. When a dog hears the word “no” there is potentially much more going on inside their minds than just stopping an unwanted (and sometimes dangerous) behavior. When dogs restrain their behavior, their
The Parthenon is undeniably one of history’s most renowned architectural feats,but one detail of its structural genius is a total hoax. For over 2,000 years, scholars and admirers have alleged that the ancient Greek building’s nearly imperceptible curves were specifically crafted to compensate for optical illusions that would otherwise ruin the structure’s clean lines. But
Fifty years ago, on Sept. 17, 1976—Constitution Day of America’s bicentennial year—NASA unveiled its first space shuttle orbiter, OV-101, to the public. NASA had originally planned to name the vehicle Constitution, but a letter-writing campaign changed the agency’s plans. Nearly 100,000 fans of the Star Trek television series wrote the White House urging that the
For brevity, we summarize the essentials of Delphy’s operation here; full details are provided in the Supplementary Information. EMATs Delphy represents trees internally as a collection of explicitly timed nodes and a reference sequence. Each non-root node points to an earlier parent, and each inner node to two later children. Every instant in the tree
In 1926, when Albert Scott Crossfield was five years old, a priest came to his home to administer the last rites. Suffering from an advanced case of pneumonia that had scarred his lungs and attacked his heart, the young Crossfield was drifting in and out of a coma when his parents summoned Father Skiperelli. They
Ancient Egyptian queen Nefertiti, thought to have ruled as Pharaoh, might be buried near Tutankhamun. Credit: Filo/Getty Tutankhamun’s tomb in Egypt’s Valley of the Kings has long puzzled archaeologists. Might hidden chambers — suspected to hold the remains of Nefertiti — lie beyond its walls? Now, researchers say they have found new evidence pointing to