This week, see what makes loggerhead sea turtles “dance,” track a cosmic “ghost particle,” uncover an ancient basilica, and more.

Non-mixing layers of water and hydrocarbons thousands of miles deep could explain the icy planets’ strange magnetic fields.

Earn 2 miles per dollar on purchases. Redeem miles (at 1 cent apiece) for credit on your statement against any travel purchase, with none of the restrictions of airline cards.

In NAF version 5.1, the connection between the State/Territory units and NAF units were removed from the main NAF worksheet, with a new worksheet developed showing this relationship more clearly ...