There once was a Woman

Once upon a Time, There Was Papyrus

'Once upon a time there was a congress...'

Corresponding author: Prof. Michael John Vita-Salute San Raffaele University Via Olgettina 48 20132 Milano, Italy e.mail: [email protected] conclude immediately‘, spoken by the irritated moderator. Of course, he could have rehearsed the presentation beforehand to get his timing right. He hadn’t thought of that. He could also have numbered his slides in order to know where he was in the presen...

Once upon a time there was complex numerical estimation

During the last decade, evidence collected in cognitive, developmental, and comparative research showed that adults prevented from verbal counting, along with infants and non-human animals possess numerical systems that are independent of language (the so-called “non-verbal numerical abilities”). Interestingly very similar results were reported among mammals, birds, and fish, leading some autho...

Was There a Big Bang ?

CIENCE IS a congeries of great quests, and cosmology is the grandest of the great quests. Taking as its province the universe as a whole, cosmology addresses the old, the ineradicable questions about space and time, nature and destiny. It is not a subject for the tame or the timid. For the first half of the 20th century, cosmology remained a discipline apart, as a clutch of talented but otherwo...

Once there were twenty.

Aminoacyl-tRNA synthetases play a central role in protein synthesis by covalently linking the correct amino acid to the correct tRNA (1). Each aminoacyl-tRNA is then carried to the ribosome where it interacts with the cognate trinucleotide codon on the mRNA and transfers the amino acid onto a growing polypeptide chain. Work on tRNAs and aminoacyltRNA synthetases from bacteria, fungi, plants, an...