Harvard Observatory in Peru

Chankillo: a 2300-year-old solar observatory in coastal Peru.

The Thirteen Towers of Chankillo run north to south along a low ridge within a fourth-century B.C.E. ceremonial complex in north coastal Peru. From evident observing points within the adjacent buildings to the west and east, they formed an artificial toothed horizon that spanned-almost exactly-the annual rising and setting arcs of the Sun. The Chankillo towers thus provide evidence of early sol...

Harvard University

The comments I offer in this memorandum on the MAC’s recommendations are limited to the issues listed below. In many cases, I agree with the MAC’s recommendations, and offer comments in order to contribute to broader debates about climate policy design in California, which will continue for years to come. There are also instances where I disagree with the MAC’s conclusions or believe the MAC fa...

Harvard Institute for International Development HARVARD UNIVERSITY Development Discussion

Nearly all economic models of the household have implications for how characteristics of the children in a family affect human capital investments in their siblings. Much evidence suggests that perceived returns to investing in sons is higher than investing in daughters in many economies (often due to cultural practices rather than inherent productivity differences). When this is so – and where...

The Harvard Review

A New Psychology? iii EDITOR'S INTRODUCTION Molecules and Memory 1. FRANCIS 0. SCHMITT Memories, Molecules and Minds 8 JAMES V. MCCONNELL The Physiology of the Brain in 1.965 1.8 DAVID H. HUBEL The Death of Dualism 24 ALFRED L. GOLDBERG Machines That Can Think 36 STEPHEN F. JENCKS The Whole Or Its Parts? 46 PHILIP J. STONE Love in a Test Tube 49 JOEL E. COHEN _ Psychophysiology and the 57 RICHA...

Harvard Law Review