The Double Purcell Prusik is an essential knot system for arborists and tree climbers, designed to enhance safety and protect gear during ascents, descents, and complex canopy maneuvers. This tutorial ...

FDA intends to put its most serious warning on COVID vaccines, sources say Gavin Newsom's office responds to '10,000 arrests' of migrants in LA Home Depot target of major theft ring, prosecutors say ...

The Dark Forest theory is one proposed solution to the famed Fermi Paradox, which has bewitched astronomers for more than half a century. To put it concisely, the paradox asks if the cosmos is nearly ...