Submitted by floatingworks on Tue, 12/19/2017 - 09:28
Quantum entanglement being used by birds to navigate via the earths magnetic field?
Source:LiveScience
Submitted by floatingworks on Fri, 09/13/2013 - 08:12
6174 looks pretty straightforward but try this.
Sort it by highest to lowest digit : 7641
Reverse the resulting number : 1467
Subtracting 1467 from 7641 leaves 6174