For the Earth That Has Never Been

Never Has There Been a Shade1

“O this date [in 1618] Abu’l Hasan the artist, who had been awarded the title Nadir al-Zaman [Wonder of the Age], presented a painting he had made .... Since it was worthy of praise, he was shown limitless favor. Without exaggeration, his work is perfect, and his depiction is a masterpiece of the age.” These were the words of Emperor Jahangir of the Mughal Dynasty of India. “Abu’l Hasan’s fathe...

Cerebrovascular research: the opportunity has never been better.

IN LESS THAN FIFTY YEARS, cerebrovascular research has changed from a predominantly morphological and clinical descriptive science to one characterized by the use of the tools of modern cellular biology and clinical investigation. In addition, the brain and its blood supply in health and in disease are now recognized as a unique biological entity for which vascular models in other parts of the ...

The Americas region declares that rubella has been eliminated.

It has been conjectured that self-replicating systems will enab

It has been conjectured that self-replicating systems will enable complex macroscale objects to be made in a reasonable time using nanoscale assembly processes [1]. Self-replicating systems might also be used within reconfigurable structures on any scale, such as micro-circuits. An abstract model of a programmable constructor in a kinematic simulation environment is presented. This programmable...

Who has been caring for the baby?

Nearly a decade ago, The Lancet published the Neonatal Survival Series, with an ambitious call for integration of newborn care across the continuum of reproductive, maternal, newborn, and child health and nutrition (RMNCH). In this first of five papers in the Every Newborn Series, we consider what has changed during this decade, assessing progress on the basis of a systematic policy heuristic i...