When people are dropped into the most dangerous of conditions – as when disaster strikes, or during exploration of another planet – they generally have the highest number of needs and the lowest ...

Egypt, third millennium b.c. The Great Pyramid of Giza is both the oldest of the Seven Wonders and the only one still standing. Built by the pharaoh Khufu (reigned ca. 2551–2528 b.c.) to serve as his ...

Most neurons receive thousands of synaptic inputs onto widely spread dendrites. Because of dendritic filtering, distant synapses should have less efficacy than proximal ones. To investigate this, we ...

Catechol oxidases are ubiquitous plant enzymes containing a dinuclear copper center. In the wound-response mechanism of the plant they catalyze the oxidation of a broad range of ortho-diphenols to the ...

A new study reveals that the Pyramid of the Moon at Teotihuacan, Mexico, marks the astronomical orientation axis of the ancient city. The research team, coordinated by Ismael Arturo Montero García, ...

Its a well-known fact that the ancient pyramids of Egypt were built as tombs and memorials for pharaohs, their families, and other aristocratic Egyptians from the elite classes, as the ancient ...